why this completly wrong thread title?
For your problem. Maybe you should rebuild your kernel with msr built in (why build it as modul? you have to use it anyway), instead of a modul, maybe this will solve your problem.
And if msr is built in, try a 'real' kernel like 2.6.3 or 2.6.4-rc. The bk-versions don't even have to build...
But maybe I am totally wrong.. but I am one of the many nvidia&2.6 users without problems.