hi bro:
My server was infected with spyware.The net connection was denied by the spyware.Sometime the keygboard couldnot function & stm mouse.The yahoo anti spy that I had installed was gone without my knowledge.Finally,I formatted my drive & reinstall every software.Now its working ok.
So, I guess formatting is the right answer according to my experience.
If u find any better, plz share
Roxin,the net guy