I've had a 30 gig 5G iPod for a little over 6 months now, and until yesterday it has been absolutely fine. Now it won't turn on, mount (on OS X and Windows) or charge. I've tried to connect it via different USB ports, with different iPod connecting cables and in and out of the dock. Windows recognises it as an iPod, but can't populate the hard drive, so I presume it's something to do with the HD. I've tried pretty much everything I can think of, but I have a gut feeling it's pretty much finished.