U2010 with Windows XP

I seriously consider to switch my new notebook to Windows XP. Under Windows Vista is a nightmare. it take more then 10 minutes to fully restart a computer. It is something. 1st day i got it install updates about 3hours so i was unable to use it (do not turn off computer windows CONFIGURING updates) and as result it came to state that Updates was not started at all anymore. I searched google on "Windows update stop working" and found a lot of people asking "My Vista stop working after update". I was using system restore to go back and then install updates one by one. It tool about 24hours of work. Unstable crazy system, alpha version installed on mobile hardware. You computer is not for you. It crashing searching for solutions, doing a lot of useful job solving problems, that you didn't have before. So smart :) I disabled notification about antivirus. Yes i don't have it because there is no memory and processor for it. I disabled updates because i need my computer at list should browse list of available updates (one of it crashing updates). It is really powerful and clever hybrid, but so useless :) Now waiting custom release second package with eternal DVD so i can complete with installation of XP.