Apologies for posting this in linux, I followed a link here and didn't realise. Can this be moved?

When I launch the ui (loading into library view), I can launch games ok, but when I move my mouse over the top area of the window (STORE/LIBRARY/COMMUNITY/USER area), the application stops responding (consistently). This only started happening sometime within the past 2 weeks, although I don't use steam often enough for that to be an accurate indication of when the bug was introduced. If I move the mouse onto steam from the top, I can still access the menu (I used that to get to the tool to generate system information).

I had a quick look for log files and found a debug.log in the root steam install folder. Clearing out and reproducing the error yields 1 line:

[0907/135508:ERROR:renderer_main.cc(227)] Running without renderer sandbox

following sections
==WINLOG==
==SYSINFO==

==WINLOG==
Windows event log is not very helpful: -

`

• 1002 2 101 0x80000000000000 13384 Application DAISY
• Steam.exe 2.37.82.33 1444 01cfca994363a3e2 7 C:\Program Files (x86)\Steam\Steam.exe ab1499de-368c-11e4-8285-8c89a52ffe4c 55006E006B006E006F0077006E0000000000 `

==SYSINFO==
`
Processor Information:
Vendor: GenuineIntel
CPU Family: 0x6
CPU Model: 0x2a
CPU Stepping: 0x7
CPU Type: 0x0
Speed: 3293 Mhz
4 logical processors
4 physical processors
HyperThreading: Unsupported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Unsupported
SSE41: Supported
SSE42: Supported

Network Information:
Network Speed:

Operating System Version:
Windows 8.1 (64 bit)
NTFS: Supported
Crypto Provider Codes: Supported 311 0x0 0x0 0x0

Video Card:
Driver: AMD Radeon HD 5800 Series

DirectX Driver Name:  aticfx32.dll
Driver Version:  13.251.0.0
DirectX Driver Version:  8.17.10.1247
Driver Date: 6 Dec 2013
OpenGL Version: 4.3
Desktop Color Depth: 32 bits per pixel
Monitor Refresh Rate: 60 Hz
DirectX Card: AMD Radeon HD 5800 Series
VendorID:  0x1002
DeviceID:  0x6899
Number of Monitors:  1
Number of Logical Video Cards:  1
No SLI or Crossfire Detected
Primary Display Resolution:  2560 x 1440
Desktop Resolution: 2560 x 1440
Primary Display Size: 23.50" x 13.23"  (26.97" diag)
                                        59.7cm x 33.6cm  (68.5cm diag)
Primary Bus Type Not Detected
Primary VRAM: 1024 MB
Supported MSAA Modes:  2x 4x 8x 

Sound card:
Audio device: Speakers (ASUS Xonar DS Audio D

Memory:
RAM: 8160 Mb

Miscellaneous:
UI Language: English
Microphone: Not set
Media Type: DVD
Total Hard Disk Space Available: 3099582 Mb
Largest Free Hard Disk Block: 2176002 Mb
OS Install Date: Jan 01 1970
Game Controller: Generic USB Joystick detected

Installed software:
Tools for .Net 3.5
7-Zip 9.20 (x64 edition)
Adobe AIR
Adobe Community Help
Adobe Photoshop CS5
Age of Empires II: HD Edition
AMD Accelerated Video Transcoding
AMD Catalyst Install Manager
Apple Application Support
Apple Mobile Device Support
Apple Software Update
ASUS Xonar DS Audio
AzureTools.Notifications
Behaviors SDK (XAML) for Visual Studio
Blend for Visual Studio 2013
Blend for Visual Studio 2013 ENU resources
Blend for Visual Studio SDK for .NET 4.5
Blend for Visual Studio SDK for Silverlight 5
Bonjour
Brackets
Build Tools - amd64
Build Tools - x86
Build Tools Language Resources - amd64
Build Tools Language Resources - x86
Canon IJ Network Scanner Selector EX
Canon IJ Network Tool
Canon IJ Scan Utility
Canon MX450 series MP Drivers
Canon MX450 series User Registration
Catalyst Control Center InstallProxy
CloudReading
Counter-Strike: Global Offensive
Dawn Of War
Dawn of War - Dark Crusade
Dawn Of War - Winter Assault
Definition Update for Microsoft Office 2010 (KB982726) 64-Bit Edition
Dotfuscator and Analytics Community Edition
Entity Framework Tools for Visual Studio 2013
Fallout: New Vegas
Fiddler
Fleet Operations version 3.2.7
Foxit Reader
Google Chrome
Google Update Helper
Half-Life
Half-Life 2
Half-Life 2: Episode One
Half-Life 2: Episode Two
IIS 8.0 Express
IIS Express Application Compatibility Database for x64
IIS Express Application Compatibility Database for x86
Inkscape 0.48.5
iTunes
Java 7 Update 45
Java 7 Update 45 (64-bit)
Java Auto Updater
JavaScript Tooling
JetBrains ReSharper 8.0.2
LocalESPC Dev12
LocalESPCui for en-us Dev12
Malwarebytes Anti-Malware version 1.75.0.1300
Microsoft .NET Framework 4 Multi-Targeting Pack
Microsoft .NET Framework 4.5 Multi-Targeting Pack
Microsoft .NET Framework 4.5 SDK
Microsoft .NET Framework 4.5.1 Multi-Targeting Pack
Microsoft .NET Framework 4.5.1 Multi-Targeting Pack (ENU)
Microsoft .NET Framework 4.5.1 RC Multi-Targeting Pack for Windows Store Apps
Microsoft .NET Framework 4.5.1 RC Multi-Targeting Pack for Windows Store Apps (ENU)
Microsoft .NET Framework 4.5.1 SDK
Microsoft Advertising SDK for Windows 8.1 - ENU
Microsoft Advertising Service Extension for Visual Studio
Microsoft ASP.NET MVC 4 - Visual Studio 2013 - ENU
Microsoft ASP.NET MVC 4 Runtime
Microsoft ASP.NET Web Frameworks and Tools - Visual Studio 2013 - ENU
Microsoft ASP.NET Web Pages 2 - Visual Studio 2013 - ENU
Microsoft ASP.NET Web Pages 2 Runtime
Microsoft C++ Azure Mobile SDK for Visual Studio 2013
Microsoft C++ REST SDK for Visual Studio 2013
Microsoft Exchange Web Services Managed API 2.0
Microsoft Expression Blend SDK for .NET 4
Microsoft Help Viewer 2.1
Microsoft Identity Extensions
Microsoft LightSwitch for Visual Studio 2013 Core
Microsoft LightSwitch for Visual Studio 2013 CoreRes - ENU
Microsoft LightSwitch for Visual Studio 2013 v4.0 Tools
Microsoft LightSwitch for Visual Studio 2013 v4.0 ToolsRes - ENU
Microsoft LightSwitch v4.0 SDK
Microsoft NuGet - Visual Studio 2013
Microsoft Office 2003 Web Components
Microsoft Office 2013 Developer Tools for Microsoft Visual Studio (x64)
Microsoft Office 2013 Developer Tools for Microsoft Visual Studio (x64) - ENU Language Pack
Microsoft Office Access MUI (English) 2010
Microsoft Office Access Setup Metadata MUI (English) 2010
Microsoft Office Excel MUI (English) 2010
Microsoft Office Groove MUI (English) 2010
Microsoft Office InfoPath MUI (English) 2010
Microsoft Office Office 32-bit Components 2010
Microsoft Office OneNote MUI (English) 2010
Microsoft Office Outlook MUI (English) 2010
Microsoft Office PowerPoint MUI (English) 2010
Microsoft Office Professional Plus 2010
Microsoft Office Proof (English) 2010
Microsoft Office Proof (French) 2010
Microsoft Office Proof (Spanish) 2010
Microsoft Office Proofing (English) 2010
Microsoft Office Publisher MUI (English) 2010
Microsoft Office Shared 32-bit MUI (English) 2010
Microsoft Office Shared MUI (English) 2010
Microsoft Office Shared Setup Metadata MUI (English) 2010
Microsoft Office Word MUI (English) 2010
Microsoft Portable Library Multi-Targeting Pack
Microsoft Portable Library Multi-Targeting Pack Language Pack - enu
Microsoft Report Viewer Add-On for Visual Studio 2013
Microsoft SharePoint 2013 Developer Tools for Visual Studio
Microsoft SharePoint 2013 Developer Tools for Visual Studio 2012 Nuget Package
Microsoft SharePoint 2013 Developer Tools for Visual Studio ENU Language Pack
Microsoft Silverlight
Microsoft Silverlight 5 SDK
Microsoft SQL Server 2012 Command Line Utilities
Microsoft SQL Server 2012 Data-Tier App Framework
Microsoft SQL Server 2012 Data-Tier App Framework (x64)
Microsoft SQL Server 2012 Express LocalDB
Microsoft SQL Server 2012 Management Objects
Microsoft SQL Server 2012 Management Objects (x64)
Microsoft SQL Server 2012 Native Client
Microsoft SQL Server 2012 T-SQL Language Service
Microsoft SQL Server 2012 Transact-SQL ScriptDom
Microsoft SQL Server Compact 4.0 SP1 x64 ENU
Microsoft SQL Server Data Tools - enu (12.0.30919.1)
Microsoft SQL Server Data Tools Build Utilities - enu (12.0.30919.1)
Microsoft SQL Server System CLR Types
Microsoft SQL Server System CLR Types (x64)
Microsoft System CLR Types for SQL Server 2012
Microsoft System CLR Types for SQL Server 2012 (x64)
Microsoft Team Foundation Server 2013 Object Model (x64)
Microsoft Team Foundation Server 2013 Object Model Language Pack (x64) - ENU
Microsoft Visual Basic for Applications 7.1 (x64)
Microsoft Visual Basic for Applications 7.1 (x64) English
Microsoft Visual C++ ARM Libraries
Microsoft Visual C++ x64 Libraries
Microsoft Visual C++ x64 Native Compilers
Microsoft Visual C++ x64 Native Compilers - ENU Resources
Microsoft Visual C++ x64-arm Cross Compilers
Microsoft Visual C++ x64-arm Cross Compilers - ENU Resources
Microsoft Visual C++ x64-x86 Cross Compilers
Microsoft Visual C++ x64-x86 Cross Compilers - ENU Resources
Microsoft Visual C++ x86 Libraries
Microsoft Visual C++ 2005 Redistributable
Microsoft Visual C++ 2005 Redistributable (x64)
Microsoft Visual C++ 2008 Redistributable - x64 9.0.30729.4148
Microsoft Visual C++ 2008 Redistributable - x64 9.0.30729.6161
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.17
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.4148
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.6161
Microsoft Visual C++ 2010 x64 Redistributable - 10.0.40219
Microsoft Visual C++ 2010 x86 Redistributable - 10.0.40219
Microsoft Visual C++ 2012 Redistributable (x64) - 11.0.60610
Microsoft Visual C++ 2012 Redistributable (x86) - 11.0.60610
Microsoft Visual C++ 2012 x64 Additional Runtime - 11.0.60610
Microsoft Visual C++ 2012 x64 Minimum Runtime - 11.0.60610
Microsoft Visual C++ 2012 x86 Additional Runtime - 11.0.60610
Microsoft Visual C++ 2012 x86 Minimum Runtime - 11.0.60610
Microsoft Visual C++ 2013 x64 Designtime - 12.0.21005
Microsoft Visual C++ 2013 32bit Compilers - ENU Resources
Microsoft Visual C++ 2013 Compilers
Microsoft Visual C++ 2013 Compilers - ENU Resources
Microsoft Visual C++ 2013 Core Libraries
Microsoft Visual C++ 2013 Extended Libraries
Microsoft Visual C++ 2013 Microsoft Foundation Class Libraries
Microsoft Visual C++ 2013 x64 Additional Runtime - 12.0.21005
Microsoft Visual C++ 2013 x64 Debug Runtime - 12.0.21005
Microsoft Visual C++ 2013 x64 Minimum Runtime - 12.0.21005
Microsoft Visual C++ 2013 x86 Additional Runtime - 12.0.21005
Microsoft Visual C++ 2013 x86 Debug Runtime - 12.0.21005
Microsoft Visual C++ 2013 x86 Minimum Runtime - 12.0.21005
Microsoft Visual C++ 2013 x86-x64 Compilers
Microsoft Visual Studio 2005 Remote Debugger Light (x64) - ENU
Microsoft Visual Studio 2010 Tools for Office Runtime (x64)
Microsoft Visual Studio 2013 Devenv
Microsoft Visual Studio 2013 Devenv Resources
Microsoft Visual Studio 2013 Performance Collection Tools
Microsoft Visual Studio 2013 Performance Collection Tools - ENU
Microsoft Visual Studio 2013 Preparation
Microsoft Visual Studio 2013 Profiling Tools
Microsoft Visual Studio 2013 Shell (Minimum)
Microsoft Visual Studio 2013 Shell (Minimum) Interop Assemblies
Microsoft Visual Studio 2013 Shell (Minimum) Resources
Microsoft Visual Studio 2013 Team Explorer Language Pack - ENU
Microsoft Visual Studio 2013 VsGraphics Helper Dependencies
Microsoft Visual Studio Professional 2013
Microsoft Visual Studio Professional 2013 - ENU
Microsoft Visual Studio Ultimate 2013 XAML UI Designer Core
Microsoft Visual Studio Ultimate 2013 XAML UI Designer enu Resources
Microsoft Web Deploy 3.5
Microsoft Web Developer Tools 2013 - Visual Studio 2013
Microsoft_VC80_ATL_x86_x64
Microsoft_VC80_CRT_x86
Microsoft_VC80_CRT_x86_x64
Microsoft_VC80_MFCLOC_x86
Microsoft_VC80_MFCLOC_x86_x64
Microsoft_VC80_MFC_x86
Microsoft_VC80_MFC_x86_x64
Microsoft_VC90_ATL_x86
Microsoft_VC90_ATL_x86_x64
Microsoft_VC90_CRT_x86
Microsoft_VC90_CRT_x86_x64
Microsoft_VC90_MFC_x86
Microsoft_VC90_MFC_x86_x64
Mozilla Firefox 31.0 (x86 en-US)
Mozilla Maintenance Service
Notepad++
Open XML SDK 2.5 for Microsoft Office
OpenAL
OpenRA
Paint.NET v3.5.11
PDF Settings CS5
PreEmptive Analytics Visual Studio Components
Prerequisites for SSDT
Python 2.7.3
Python Tools Redirection Template
Reason 4.0
Sandboxie 4.08 (64-bit)
Security Update for Microsoft Office 2010 (KB2553284) 64-Bit Edition
Security Update for Microsoft Office 2010 (KB2687423) 64-Bit Edition
Security Update for Microsoft Office 2010 (KB2850016) 64-Bit Edition
Security Update for Microsoft Office 2010 (KB2880971) 64-Bit Edition
Security Update for Microsoft Office 2010 (KB2881071) 64-Bit Edition
Service Pack 2 for Microsoft Office 2010 (KB2687455) 64-Bit Edition
SharePoint Client Components
SketchUp 2013
Skype™ 6.11
SolidWorks 2013 x64 Edition SP0
SolidWorks eDrawings 2013 x64 Edition SP0
Source SDK Base 2007
SourceTree
Steam
Sublime Text 2.0.2
Supreme Commander 2
Team Explorer for Microsoft Visual Studio 2013
TeamViewer 9
The Elder Scrolls V: Skyrim
tools-freebsd
tools-linux
tools-netware
tools-solaris
tools-windows
tools-winPre2k
TradeManager 2014 Beta1
Update for (KB2504637)
Update for CHS Microsoft IME HAP Dictionary
Update for Microsoft Access 2010 (KB2553446) 64-Bit Edition
Update for Microsoft Excel 2010 (KB2837600) 64-Bit Edition
Update for Microsoft Filter Pack 2.0 (KB2878281) 64-Bit Edition
Update for Microsoft InfoPath 2010 (KB2817369) 64-Bit Edition
Update for Microsoft InfoPath 2010 (KB2817396) 64-Bit Edition
Update for Microsoft Office 2010 (KB2589298) 64-Bit Edition
Update for Microsoft Office 2010 (KB2589352) 64-Bit Edition
Update for Microsoft Office 2010 (KB2589375) 64-Bit Edition
Update for Microsoft Office 2010 (KB2597087) 64-Bit Edition
Update for Microsoft Office 2010 (KB2687502) 64-Bit Edition
Update for Microsoft Office 2010 (KB2760598) 64-Bit Edition
Update for Microsoft Office 2010 (KB2794737) 64-Bit Edition
Update for Microsoft Office 2010 (KB2825635) 64-Bit Edition
Update for Microsoft Office 2010 (KB2825640) 64-Bit Edition
Update for Microsoft Office 2010 (KB2837581) 64-Bit Edition
Update for Microsoft Office 2010 (KB2837606) 64-Bit Edition
Update for Microsoft Office 2010 (KB2878252) 64-Bit Edition
Update for Microsoft Office 2010 (KB2881028) 64-Bit Edition
Update for Microsoft OneNote 2010 (KB2837595) 64-Bit Edition
Update for Microsoft Outlook 2010 (KB2687567) 64-Bit Edition
Update for Microsoft PowerPoint 2010 (KB2837579) 64-Bit Edition
Update for Microsoft SharePoint Workspace 2010 (KB2760601) 64-Bit Edition
Update for Microsoft Visio 2010 (KB2880526) 64-Bit Edition
Update for Microsoft Visio Viewer 2010 (KB2837587) 64-Bit Edition
Update for Microsoft Word 2010 (KB2880529) 64-Bit Edition
VirtualCloneDrive
Visual F# 3.1 SDK
Visual F# 3.1 VS
Visual Studio 2013 Prerequisites
Visual Studio 2013 Prerequisites - ENU Language Pack
Visual Studio Extensions for Windows Library for JavaScript
VLC media player 2.1.2
VmciSockets
VMware Workstation
WCF Data Services 5.6.0 Runtime
WCF Data Services Tools for Microsoft Visual Studio 2013
WCF RIA Services V1.0 SP2
WinCDEmu
Windows App Certification Kit Native Components
Windows App Certification Kit x64
Windows Azure Mobile Services SDK
Windows Azure Mobile Services Tools for Visual Studio 2013 Preview - v1.0
Windows Azure Shared Components for Microsoft Visual Studio 2013 - v1.0
Windows Azure Tools for LightSwitch for Visual Studio 2013 - v2.1
Windows Runtime Intellisense Content - en-us
Windows Software Development Kit
Windows Software Development Kit DirectX x64 Remote
Windows Software Development Kit DirectX x86 Remote
Windows Software Development Kit for Windows Store Apps
Windows Software Development Kit for Windows Store Apps DirectX x64 Remote
Windows Software Development Kit for Windows Store Apps DirectX x86 Remote
Windows XP Targeting with C++
Workflow Manager Client 1.0
Workflow Manager Tools 1.0 for Visual Studio
`