Good call, I forgot about him checking commit charge, etc.
Gilbo, thanks for the info, didn't know that about XP's behavior. Also, I haven't witnessed it myself the way I use my computer. Actually, it's pretty linear for me: RAM usage goes up, my computer gets slow; RAM gets free, my computer runs normal, Peak commit charge hits Total Phys Memory, computer c-r-a-w-l-s. But it's a laptop and I reboot a lot so maybe that's why.