- Thinkpad t520; Ubuntu 12.04.1 LTS; 3.2.0-33-generic; 16GB of ram.
- Memtest86+ ran for 26 hours, 9 passes, no errors.
- Booted into "recovery mode": ran
fsckall filesystems - no errors; "check all packages" - no errors.
- Apparent random memory corruption:
chromesegfault every now and then, seemingly at random;
sort(1)produces corrupt unsorted files.
What could be possibly wrong and how do I debug it?