I've scanned various forums and seem to see a pattern. Upgrading to IOS 4 is generally slow - that's fine. However a large number of people are finding that the back-up takes more like days, rather than hours. And before the backup complete's - it fails. So has anyone actually managed to upgrade with: - IPhone 3G Window 7 64 bit Itunes 9.2 I can do a normal backup, although this now takes an hour, whereas with Itunes 9.1 it was 5 minutes. The nearest I've got to the upgrade backup completing was 11 hours, before it failed!