Other things I've noticed:
- UEd2 has started stuttering badly like never before.
- UT itself also stutters badly - GoW style.
- Coronas are 'breaking' up (flicker in and out) when in view and appear white instead of adopting its supposed light color.
- The error shown above - it's the first time I've experienced it.
- This crap started happening only recently. Most recent important activity around my comp is that I've fixed Gears and that UT3 has been installed.
What should I do to fix this?