Note: I've been unable to reproduce this, it seems it only happened the very first time I played.

This is most noticable in the training area. Directly after entering a different segment of the training area, the first second or so of speech is frequently skipped. The display also freezes/skips a little bit. It's only a problem when the speech starts right after loading, other speech is fine. (I've seen signs of this happening in the main game too, but it's much less noticable there, and no speech skipped there so far. Seems to work fine otherwise.)

Processor Information:
    Vendor:  GenuineIntel
    Speed: 2794 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:
    Ubuntu 12.10 (64 bit)
    Kernel Name:  Linux
    Kernel Version:  3.5.0-22-generic
    X Server vendor:  The X.Org Foundation
    X Server release:  11300000

Video Card:
    Driver:  NVIDIA Corporation GeForce GTX 460/PCIe/SSE2

    Driver Version:  4.3.0 NVIDIA 310.14
    Desktop Color Depth: 24 bits per pixel
    Monitor Refresh Rate: 60 Hz
    VendorID:  0x10de
    DeviceID:  0xe22
    Number of Monitors:  1
    Number of Logical Video Cards:  1
    Primary Display Resolution:  1920 x 1080
    Desktop Resolution: 1920 x 1080
    Primary Display Size: 20,04" x 11,26"  (22,95" diag)
                                            50,9cm x 28,6cm  (58,3cm diag)
    Primary Bus: PCI Express 16x
    Primary VRAM: 767 MB
    Supported MSAA Modes:  2x 4x 8x 16x 

Sound card:
    Audio device: Realtek ALC889

Memory:
    RAM:  7981 Mb

Miscellaneous:
    UI Language:  English
    LANG:  nb_NO.UTF-8
    Microphone:  Not set
    Total Hard Disk Space Available:  2816683 Mb
    Largest Free Hard Disk Block:  1364661 Mb