I've got Windows XP set up on a machine with 3GB of RAM but I never use up more than 30% of it, even with loads of applications running. Despite this, XP fills my page file up. For example, right now I have 73% (2.2GB) of my physical memory free and Firefox is using 132MB of my page file and 147MB of my physical memory. If I launch photoshop, it uses 32MB of physical memory and 500MB+ of page file! This causes it to be really sluggish with large images.
I've heard that disabling the page file is a really bad idea (not sure why), but in this case I have so much memory that using the page file is completely pointless. How do I sort this?