I think I have something similar. After upgrading to Karmic I get frequent freezes at quite random times.
I can always see the same error in the log: " NVRM: Xid (0001:00): 13, 0001 00000000 00000000 00000000 00000000 00000080 " Do you get an NVRM Xid error as well? -- Freezes with nvidia-glx-185 or -190 after upgrade from jaunty to karmic https://bugs.launchpad.net/bugs/486837 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-180 in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp