I'm running XP SP2, and experiencing a non-paged pool leak of about 150 MBs a day. The pool will fill up after about 42 hours leading to a BSOD (0x000000f4). Poolmon is indicating the tag IRP is allocating ~20 bytes constantly and never freeing it. It's probably a driver, but I can't get any closer than that to finding out which one. I also monitored the leak in safe mode with no networking and it still leaks there. Could anyone perhaps help narrow it down more?