I downloaded iTunes 7 to my PC. The installation took a really long time and during the install the status bar at several times said it was deleting files, I assume it means old iTunes program files. I've noticed while playing music I am getting exclamation marks and song could not be found next to files that I am pretty sure were there before. Some are TV shows, some are songs. I followed Apple's advice and went to Windows search, and searched for All files and folders and typed in both "m4p" and "ipg" and no intelligible results came up (just different types of system files). I could be wrong and these files were missing before, but I really think I would have noticed. It seems like there is no pattern to which ones I have noticed are missing: some are purchased, some ripped etc. I keep my iTunes music folder consolidated and tell it to add music to the iTunes library, so I really am at a loss. So I could have a better idea, does anyone know if there's a way to see how many items WERE in my iTunes library before the installation? Like through a log file? That way I could compare to now to see if these were lost after installation. Also, I am not too familiar with Windows..would system restore be helpful in this situation? Many, many thanks. I've already e-mailed Apple, BTW, but I'm not expecting a lot of response from them, so if you guys can help it would be appreciated.