Odd little graphics stutter

[fischsemmel]

When in the third-person view and spinning my character in circles (not using the mouse), when my character pans across true north, the screen jumps/stutters a little bit.

Not a big deal, just a TINY bit annoying and I'm curious if it happens to anyone else.

Edit - nah, actually it happens when I do it with the mouse too. I'm playing windowed, using wineq, if that affects things.