ahhh, glad you asked that, so I'm not the only one.
First I thought it was my ChatBots mutator (hence the reason I have not let it out yet), then I ran the server 'clean' but still, every now during a map changeover, it crashes to the desktop with a critical about some unknown file it cannot find.
I must say the more I play UT3 the less I like it.
The weapon change is far far too slow.
In Deathmatch the character skins are almost invisible as they blend with the crap colorless background textures.
Even with the Bots in 'average' skill level, they often play like 'super gods' and annihilate you.
Their accuracy is uncanny, you shoot them with the Flakcannon at almost point blank range and they walk away, but they shoot you from a distance, you dead.
I am really really trying very hard to motivate myself to code for this game but often find myself doing other things