[ 59.713036] NVRM: API mismatch: the client has the version 1.0-9631, but
[ 59.713040] NVRM: this kernel module has the version 1.0-9755. Please
[ 59.713043] NVRM: make sure that this kernel module and all NVIDIA driver
[ 59.713046] NVRM: components have the same version.
Please see http://www.nvnews.net/vbulletin/showthread.php?t=72490
; unfortunately, it has become very difficult to keep track of what is broken where with respect to [K]Ubuntu, so the instructions may be incomplete. If in doubt, it is recommended that you bring the problem(s) up on a more Ubuntu centric forum.