New
#11
Sorry - I got side-tracked by the thread hijack, and forgot to come back!
The CBS log you posted shows a huge number of errors in various patch sessions - I think it's a problem with the UpdateAgent. Unfortunately my skills on that re limited, and it's not a patch that can be either uninstalled or repaired easily.
The only thing I can think to do, if you've not tried already, is to rename the SoftwareDistribution Folder, and see if that fixes the problem.
Open an Elevated Command Prompt window, and run the following commands
NET STOP WUAUSERV
REN C:\Windows\SoftwareDistribution SDOLD
NET START WUAUSERV
WAIT 10 minutes - or until you see any disk activity die down - then reboot.
I would recommend disabling SpyBot's TeaTimer if it's running, as well - it can create problems with all sorts of things.