Since installing SP1, my computer seems to have slowed down. After booting I used to be able to immediately click on a desktop shortcut or a quick launch shortcut and have the program open almost instantly. Now there is a delay of as long as 5 - 10 seconds. It gives the appearance of being full booted, but obviously something is going on in background. I cleared temp and temp internet files. There are only the same two essential programs running in msconfig startup.

Anybody else have this problem or know of a fix?

Win XP home
Dell 8200
1.8 G
P4
512 Ram

Thanks