My 20gig 4g has recently been freezing for about 30 seconds - 3 or 4 minutes when changing songs, or going to the volume menu, or going back to the previous screen or whatever. This is really annoying. Also, the other day it decided to wipe all of the music on there. Well, none of it was on the artist list, there was nothing.. It was still on there however as when I looked at the about page there was still loads of space used up.. It also has taken to, when taking it off hold, resetting itself, i.e. showing the apple for a few seconds and "booting up" of sorts. The last time it did it however it didnt loose my settings (turning off clicking from the speaker and headphones!). I dont know whats wrong with it! I've had it about 2 - 2 1/2 years, and I have looked after it. I mean, yeah, its had a couple of drops but it has worked after them.. About 6 months ago however it just stopped working, and came up with the sick ipod screen constantly. I followed a rather strange guide on the internet about dropping it, which surprisingly worked! And then it worked fine after that, just a bit slow.. What should I do? I cant afford to get a 5g, an I am wanting to wait until the next revision comes out anyway before I splash out! (I just bought a MBP so am a bit skint!). Is there a way of reformatting the ipod? Checking the disk for any bad sectors or anything? Oh yeah, I also just switched from PC to Mac, and I was using a winamp plugin on my PC to manage my files, and am now on iTunes on my Mac. Dunno if that means anything!