If you installed the P5E-V mainboard from Asus, use a 45nm Intel Core2 Quad CPU and you are getting kernel panics like

CPU 0: Machine Check Exception: 0000000000000004
Bank 4: b200000000430a0a
Kernel panic - not syncing: CPU context corruption

when the processor is under heavy load, it’s not a wrong kernel option you’ve chosen.

You might want to update the firmware from 0504 to 0604. (don’t search for your old and dusty floppy drive, the BIOS can read from a FAT formatted USB stick) and those problems go away.