Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
I was just browsing newegg's processor selection, and they have several opteron's listed as socket 939 processors. Is this correct? if so, will these run in a standard 939 board, such as the Abit KN8-SLI?
Those are just Athlons in disguise. If your board supports them (it should - check manufacturer's website) then get one. They are made of the "better"silicon than the Athlons and are tested more rigorously than their Athlon counterparts.
Overall summary (incase you missed it): Thay are Athon or Athlon X2s that are better quality and better tested.