Anyone else having problems backing up their iphone since upgrading to 3.0?? I've left it backing up for 4 hours now and the progress bar doesn't even move a bit! I have a 16gb iphone 3G with about 13 GB of data on it. It always took about 40 mins to back up in the past but nothing like this. I havn't managed a back up yet on 3.0. Not good!