Sirs, I am working on a friends computer which has windows vista home edition running very slowly. Checking automatic updates, a lot of them have failed, mixed with a few successful updates going back 2 years. SP1 is listed as failed yet the system properties say SP1 was running. I have downloaded all updates on auto update successfully, but when the important update for SP2 was down loaded, it is listed in recent updates as failed.Yet again the system properties say it is running sp2, and the computer is quicker,ie. there seems to be no duplication of instruction on internet as there were before. Can I assume that vista sp2 is running successfully, although listed as failed in update hisory? Also is 512Mb enough ram to run vista successfully?