Similar problems. Example
[ 4750.600194] Pid: 0, comm: swapper/0 Tainted: P ... [ 4750.600306] [<c18340a9>] ? i386_start_kernel+0xa9/0xaf [ 4750.600308] handlers: [ 4750.600420] [<f94f3050>] nv_kern_isr
Or: [10478.427688] Pid: 5872, comm: mplayer Tainted: P ... [10478.427795] [<c1570000>] ? add_i2c_device+0x126/0x166
... [10478.427909] [<f951b050>] nv_kern_isr
I.e. my bet is it's nvidia.
Similar problems. Example
[ 4750.600194] Pid: 0, comm: swapper/0 Tainted: P kernel+ 0xa9/0xaf
...
[ 4750.600306] [<c18340a9>] ? i386_start_
[ 4750.600308] handlers:
[ 4750.600420] [<f94f3050>] nv_kern_isr
Or: device+ 0x126/0x166
[10478.427688] Pid: 5872, comm: mplayer Tainted: P
...
[10478.427795] [<c1570000>] ? add_i2c_
...
[10478.427909] [<f951b050>] nv_kern_isr
I.e. my bet is it's nvidia.