Some of the programs you had installed are questionable IMO. I have seen conflicts caused by DiskKeepers filter driver, PowerDesk has file indexing capability if enabled could cause a conflict. Utilities like jv power tools, Tuneup Utilities etc.etc.etc. could cause problems so I'd leave them out of the mix until all your normally used programs are installed and you are running without problems. Oh and Codec packs, your just looking for trouble.