I've had this desktop computer for two and a half years. I've been running Linux pretty steadily since October 2005.
Today, July 20, 2007, I figured out that I could enter the bios upon bootup and increase my onboard video card's shared ram (default 8MB) to 32MB. This took a total of about 10 seconds.
Performance is now significantly improved everywhere on my system.
I, faithful reader, am an idiot.
So if you own a pc with an Intel onboard graphics chip (mine is an i915) and it uses shared ram, do yourself a favour and check if your bios will let you increase the default amount.
Now excuse me while I go tar and feather myself.