Same as this guy except I have Windows 7, 64-bit Ultimate.  I have not thinned out my processes, yet.  I do turn off Automatic Updates in game due to "lost host" on FSO.  I noticed my CPU was running a bit hot, so I took the side cover off and it runs cooler.  Willl be installing a supercooler soon.  I have had no issues crashing except the host thing in FSO 2 times.  
Me, too, am fully updated.
Might check out 
http://www.AskWoody.com/   and his Defcon rating system.
I have had issues a couple of times with a current update causing major problems. 
No problems in game.
Last night system wanted to do a Restore when I rebooted, as I was having problems starting up.  I unplugged for 5 minutes and started over with no issues, started OK.  I did not do a Restore.
I wonder if there is an issue with this last batch of updates?
I'm using an OEM install of Windows 7 64-bit Home Premium, Superfetch disabled, high performance, and I'm not getting any crashes, aside from the one that I'm suspecting was caused by overheating.
I'm fully updated as well.