nfsd Not tainted 2.6.25.13-oe32

[symm]

Looks like problem with memory
try running memtest, restart your server and right after the POST, hit 'Esc'
and you'll get options to run the test.**It's best to let the memtest run
until it's completed.

[To-M]

I second that as well to check the memory and run the file system repair util in the Extended tools from Console.