I am using an HP Pavillion Desktop 600 series, model number a656x, with 512mb of RAM. My iTunes is the latest version I believe.
Yes, this has been occuring for as long as I can remember. What's weird is that it doesn't happen every time. Some days it doesn't happen at all, and some days only partially. Other times it occurs during my ENTIRE time online.
Occasionally I can fix it by clearing my footprints and/or disabling certain automatic start up programs, or by defragging and/or cleaning my disc. Sometimes that doesn't help at all.
I am stumped.