I'm trying to download Windows XP Service Pack 3 but I'm having problems. After going to Microsoft Windows Update page and then clicking on 'Express' I got the message 'Error Number 0x80072EE2'. Tried a solution then tried 'Express' again. This time Service Pack 3 started to download but after just 19% of download the installation process seemed to just stop. After waiting for 20 minutes I cancelled the installation and turned off my McAfee Firewall. Tried to download again. This time installation process went a bit further but seemed to stop at a point which read 'Running processes after installation'. Again after about 20 minutes I cancelled since nothing seemed to be happening. Where am I going wrong ?