Pic attached. This is my first time playing, so during the intro cutscenes I thought it was just some stylished business. But it hung around for gameplay.

I have no doubt this has been asked about a lot, but my search terms failed me.

This is a Windows XP system: Athlon 64 X2 5200+ with a GTX275.

[edit]

I have narrowed this down to running at 1600x1200. The issue goes away if I drop the resolution. I need to dig deeper to see if it's any particular setting not playing well with this res.