I haven't had any problems with it. It's not perfect, but I think it's definitely better than Vista, maybe not as great as XP. I'd still take a PC over a MAC any day, but that's my opinion.
I had a DEVIL of a time migrating files to W7 from any other (flash drive, other computer, et. c... It only wants to create a link to where the files are, not incorporate them to the new W7!