Re: GL jerky then freezes
0) Some examples are FligthGear (very frequent), Vdrift, Neverball (fullscreen). The faster the action, the more likely the problem is to occur.
1) I tried this with the old AGP card but not this one. Will try and post results.
2) Yes, it happens with single screen too. I tried ripping out all of the twinview settings from the xorg.conf file before.
3) It isn't really possible for me to generate the log while it's happening from that machine but I can see if it will allow me to ssh into it and run it if that would help.