[aznmode]

Possibly software that is not releasing the memory or just wm 6.0 itself. I noticed that wm6.1 has better memory management over 6.0. I'm almost consistently having 17mb or higher on wm6.1. However with 6.0 I was always down to 10mb even when I close all running programs. Maybe update his to 6.1 and see what happens.