I keep adding servers to my favorites and they always disappear again. I think the favorites file may get overwritten when there's an update?

edit: I'm not 100% sure this affects CS:S as well, the server may just not be online anymore. But i have definitely had this happen to me with CS 1.6

System info:

Processor Information:
Vendor: GenuineIntel
Speed: 1701 Mhz
4 logical processors
2 physical processors
HyperThreading: Supported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Unsupported
SSE41: Supported
SSE42: Supported

Network Information:
Network Speed:

Operating System Version:
Linux Mint 14 Nadia (64 bit)
Kernel Name: Linux
Kernel Version: 3.5.0-17-generic
X Server vendor: The X.Org Foundation
X Server release: 11300000

Video Card:
Driver: Intel Open Source Technology Center Mesa DRI Intel(R) Ivybridge Mobile x86/MMX/SSE2

Driver Version:  3.0 Mesa 9.0
Desktop Color Depth: 24 bits per pixel
Monitor Refresh Rate: 59 Hz
VendorID:  0x8086
DeviceID:  0x166
Number of Monitors:  1
Number of Logical Video Cards:  1
Primary Display Resolution:  1600 x 900
Desktop Resolution: 1600 x 900
Primary Display Size: 12.17" x 6.85"  (13.94" diag)
                                        30.9cm x 17.4cm  (35.4cm diag)
Primary VRAM Not Detected

Sound card:
Audio device: Intel PantherPoint HDMI

Memory:
RAM: 3655 Mb

Miscellaneous:
UI Language: English
LANG: en_US.UTF-8
Microphone: Not set
Total Hard Disk Space Available: 236630 Mb
Largest Free Hard Disk Block: 167592 Mb

Installed software:

Recent Failure Reports:
Fri Feb 8 23:51:08 2013 GMT: file ''/tmp/dumps/assert_20130209005105_1.dmp'', upload yes: ''CrashID=bp-b3bc0eae-ba67-4630-983e-466dc2130208''
Sat Feb 9 14:40:51 2013 GMT: file ''/tmp/dumps/assert_20130209154047_1.dmp'', upload yes: ''CrashID=bp-790f8f89-263f-4f5f-8510-858fd2130209''
Sat Feb 9 14:42:25 2013 GMT: file ''/tmp/dumps/assert_20130209154218_1.dmp'', upload yes: ''CrashID=bp-bdc2d080-1cb6-4e48-95c4-66ddb2130209''