Voted average since only 1 out 4 machines I installed it was useable after install ... However, that one pc that did work properly was my tablet pc, which, as some of you know, benefits alot from SP2, which upgrades the OS to "Lonestar" or Windows Xp Tablet PC Edition 2005... This is the only reason as to why I did'n rate SP2 as "The service pack of total doom" ...