I have been getting random PG startup errors at boot up (which continue even after re-booting) and though less frequent, BSOD's as well since I started using PG. I have un-installed and re-installed PG when this happens and it will work for a while but would eventually get a BSOD or a PG startup error again. It was obvious it had to be a problem with PG loading during boot up, I figured it was most likely a registry problem perhaps something trying to load that no longer existed or was mis-configured. This last time when I got a PG startup error instead of going to trouble of un-installing & re-installing PG or even WinXP which I was contemplating I got a registry cleaner Registry Mechanic to be exact. I ran it and it found 283 problems I had it repair them all, re-booted, PG started just fine and has been running great ever since.