OpenGL isn't officially supported, is it? I don't have the option ingame.
Btw, I think this is related to projectors or dropped-weapon blood (which is a projector).
Do these blacks areas appear only under bloody kill-dropped weapons?
No, it also appers around explosions and plasma gun marks on wall...
Well, about opengl, i have set this mode through *.ini file of UT2004 and Gunreal, because in Vista, although i dont have stuttering with 8800gt, i have lower framerates in D3D. Opengl is faster, but there are no shadows, just blob...