Curious graphical issue.
It has been awhile since I configured my player and I went in to create a new character from the ronin clan, I didn't notice it before by this is what I see at the character creation screen:
Notice all the white dots around the trees, grass, and wood. They are constantly blinking on and off when at the character creation screen for Ronin.
I haven't seen this any place in UT3, so I don't think its my video card.
It looks like maybe the engine is downgrading the quality of the alpha channel, it's affecting the transparent edges of the foliage. Can you turn up the texture quality settings and see if it goes away?
That is with all settings maxed, turning them down helps tone them down, but doesn't get rid of them.
Seems to be only at the Ronin Characters Creation screen, I haven't noticed it that bad any place else.