Whole bunch of problems all of a sudden

Hello there, folks!
Been running build 7600 of Windows 7 for a while and it kind of crapped out on me last night. Here are all the problems that started last night

It wont shut down ( sat on "Shutting down..." screen for 12 hours today)
The Notification Area only loads a couple of icons, no Wifi and the battery usually shows as empty even though it is full
iTunes wont start
I can't uninstall any programs (it just says "Preparing to remove," or "gathering info" forever
Right clicking on the desktop causes Windows Explorer to freeze

Well, that is all the problems I can find ATM. Been runnig 7 since the beta with no problems and I don't know why this happened all of a sudden.

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