Nope, but on all three of my systems, there were LOOOOOONG periods of time where it just seemed to sit at the same spot. Best as I can work out, the upgrade will take a copy of your hard drive, compress it, and then once it's installed Win7, it will decompress those files and put them back where they were. All of which takes a great deal of time, because it's a very disk intensive task, and compared to everything else on a computer, the hard drive is thousands of times slower.
In my case, I had anywhere from about 20-60GB of stuff to back up, so it took me a good couple of hours to install.
I bought the Windows 7 upgrade program from Staples. Beings they had the free install Deal, I took my computer to them yesterday morning to have it installed.
After many failed attempts they could never get the upgrade to install so I picked up the computer tonight still with Vista Home Premium.
The tech there said that Microsoft told him there was a bug when doing the upgrade and they would release a patch to fix the problem.
What it was doing was getting to 62% of the install then going into a loop and it wouldn't go any further. He said it didn't effect clean installs or full installs, only the upgrades.
The Windows 7 update advisor was followed so there wasn't any conflicts.
Has anyone else had or heard of this problem?
Thanks
Wayne

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic