Vista Start Menu Problem

On my vista start menu, when you click all programs and then expand each
program folder, the pictures icons next to the program name take a little
while to load up. They load one at a time going down, somtimes fast, somtimes
slow, but ive realized that other pcs dont do this. I have a good pc, core 2
duo, very good graphics card, 2 gigs of ram 280 hard drive so i dont know why
its doing this. Please reply, i need a little help =(
Thanks

P.S. If anyone knows anything about my other problem which i have a post for
called "vista welcome screen problem" please also try and help me with that.
Thanks again.