The only other change was to disable the video acceleration because I was getting some weird flashes on page reloads. My home page (Google.com) was flashing for a few milliseconds while reloading my local app. From what I remember, disabling the hardware acceleration fixed that issue.
Other than this it was basically make changes to my local site, hit refresh in FF, make changes, refresh again, and so on. Nothing special about this site, basic HTML / CSS / Javascript (jQuery), no Flash. You could see the memory steadily go up in the Task Manager.
The only reason I even noticed it was because the whole system was slowing down. I only have 3GB of RAM (Windows 7 64 bit), but I never noticed any memory pressures before. I could "feel" Windows paging the memory to disk which was slowing down everything on the box.
Good luck, and let me know if there's something else I could do to help.