http://forums.ilounge.com/showthread.php?t=179827 may help some people.
I've been troubleshooting my iPod for 2 hours now, nothing has helped yet. I have a 15gb 3rd generation iPod that's worked perfectly fine for over 2 years, and then bam, I updated iTunes and now neither of my 2 computers nor iTunes recognize my iPod. Extremely frustrating.
I first figured it was the USB cord as it didn't work on multiple ports on either computer, while other USB devices would. So I shelled out $17 for a new iPod cord... and when it still didn't work I began researching deeper and have finally made it here.
I may have made a little progress, as in Disk Mode my computer sees the connection, but doesn't recognize it as an iPod, it says "One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it."
I'm currently a little lost though, as I've tried so many things I think I'm mixing them up and maybe doing the steps in the wrong order. I uninstalled iTunes 7, installed iPod for Windows from CD, and now have iTunes 4 installed. My iPod software is already the latest for my version, 2.3.x I believe. Right now I'm backing up my mp3 collection and my library while charging my iPod. Reformatting my iPod will be the last resort. If I do manage to get Windows/iTunes to recognize my iPod again, I swear to God I will never download a newer version of iTunes.
I can't believe all these people are having similar problems stemming from one source (updating iTunes) and Apple won't admit there's a problem. Acknowledging the problem is the first step towards resolving it.
Please get your act in gear and help your customers. As far as I can figure, something in the new release affected the USB connection within the iPod itself.
I've never had a bad thing to say about my iPod or iTunes before (in fact have had to defend the products multiple times) and it'd be a shame if I had to start advising people to avoid them. There are a lot more options for decent mp3 players now, as opposed to 2+ years ago when I shelled out close to $500 for my iPod. Perhaps it's time I tried something new instead of adding to my headaches.
Dell Inspiron 6400 Other OS Windows Media Centre, SP2