After 2-3 hours of play (damn, this is a fun game) my mouse cursor 'goes away' inside the game and is invisible in windows. I'm using a 7800GT, latest drivers, have never had a problem with anything else. I have to shut down to recover.
Here's my question for people having mouse point problems - are you using the new GC2 'theme'? I wonder if that is causing the problem??
I'm running 1.0d, I believe it is, the patch from earlier this week. I hope this will get fixed soon.
-MB