Long-time reader first time poster. Recently I discovered my 2007 MacBook running pretty slow. I checked out the Activity Monitor and discovered that "Dock" is using 330MB of "real" and "virtual" memory! this seems outrageous. I have repaired disk permissions, reset my PRAM, and reinstalled snow leopard, tried quitting the process, everything I can think of, but it always jumps back up to over 300 MB of memory usage any idea what is going on?