Didn't want to over exaggerate this really is only slightly interesting and I don't have a big problem but... I have a 12" G4 (1.33 ghz) which has been an absolute workhorse since I got it. I adore it, take it anywhere, drop it, kick it (accidently) and faithful as ever it works! Well recently my shift key was sticking and I decided to release the keyboard and give it a good blow (no puns please ;-) ). Well as I was replacing the keyboard I noticed a little silver disk stuck to the back - no bigger than 3mm diameter and sort of 1 mm thick. It moved but was obviously magnetic - so I just took it out and put the keyboard back together. I rebooted and loe and behold my hard disk name was gone and replaced by a couple of dollar signs. Now, that's the curious bit I mean what happened - did disk check it's all fine so I'm not that worried (just did clean install of Leopard so I don't mind doing it again if anything happens). The other thing I have noticed is that - before I removed this disc - I would get really random airport connection, it would look as if I had a strong signal when actually it was rubbish and would drop, I'd close the lid to sleep and suddenly it wouldn't recognise any networks (even though I am sat next to my router - okay so I'm lazy I could plug a cable in but the number of times this thing has flown across the room I wouldn't want to do that with a router lol). Since taking out this little disk it seems that all my airport problems have resolved. As I say not a really 'interesting' post like ooh should I go mbp or just mb rofl! Any ideas you guru's of all things mac? Should I do another clean install 'just in case'? anyone any ideas what this silver disk is?