I just installed it, and well it was working excellently, my machine was running superbly, and things were tickity boo. Until my next reboot, My P4 2.8GHZ machine started to run extrodinarily slow and I couldn't right click on any of the icons without my computer running a hissy fit. So thats it gone again, I removed it just as quickly as I installed it. I really wanted the update, as I always ensure my P.C. up to date. Also HALO never worked after that until I got the update, how many things need to be sorted with this "be all and end all update".