I've been running hashcat to try and recover an MD5 where I have the hash from one 3750 and that user is the only account on another production 3750 I can't easily password reset. I'm running it slow because of the heat here in Florida, but it's taking a while. Either their password is very complex or I'm not hitting the right options/character set.

I wasn't aware of the BOINC rainbow tables, thanks for that! I use BOINC or FAH in the winter to keep rooms warm on cooler days since we have electric heat anyway :)

NOTE: I've had sustained computation cause the heatsink compound to dry out/crack and actually separate the heatsink from the CPU/GPU if it was put on too thick.