Been having this problem for a few days. iTunes simply isn't loading. When I try to start it, I look in my process list, iTunes.exe starts up, just to dissappear again. iTunesHelper.exe is always running, no clue what it does.

This is happening with 4.5, and started happening just randomly a few days ago. I can't think of anything I've done with my computer.

I've ran virus scans, spyware scans, no obvious conflics (hardware at least)... any tips?