Installed SP2 today without any tears (so far!) having received the CD from Microsoft within a week of ordering. When the inevitable re-installation of XP comes along will I have to load both SP 1 and SP 2? I understand that it is the usual practice to include all prior updates in a Service Pack but I have the feeling that SP 2 only includes updates issued since SP 1. In other words, does the 'cumulative rule' not apply in this instance?