I recently did a 7 pass erase of my hard disk and reinstalled OS X. I then tried to use Software Update, however, it was extremely slow to find updates (taking up to an hour) and when it did, it started to download them before saying the download had failed. I tried deleting the Software Update preferences but it had no effect. In the end I downloaded the Combo update installer from Apple downloads. I then ran Software Update again, which once again was slow but this time did download the updates albiet slowly (Java OS X 10.4 Release 5 etc). I've just tried running Software Update again and it is extremely slow. Didn't have a problem with it before I erased and reinstalled OS X. My firewall is enabled but it was enabled in the past without any issues. I've tried restarting a number of times and I even did another reinstall of OS X but no luck. Is it normal for Software Update to take this long to search for updates after a reinstall? Any help is appreciated.