Sounds like you are seeing a much more severe problem then I am. What I see is:

After a long session, when I exit Warpzilla, the comptuter comes to a complete halt for as much as a couple of minutes, then goes back to normal.

Occasionally, when loading a page from an unresponsive Web site, Warpzilla can essentially lock up the computer for an unknown length of time, but it still responds (slowly) to a Ctrl-Alt-Delete which will do a restart without having to go through Chkdsk.