Skuzzy, all of your responses are, as always, spot on, but it doesn't address the original subject of this thread.
Believe me, I am running only 12 processes while playing AH. This PC is never used to surf the Internet, I use my laptop for that. There is no spy/malware in this box.
When I say nothing has changed, well maybe that isn't quite accurate, the only real thing that changes is windows updates. The last update was to fix the time zone issue with DST. I have not installed any hardware or software. I only run the processes and services absolutely required for AH.
The only other thing I can think of is heat. I rarely shut my computer down but did the other day. I will see next time I',on if this has helped.