Me too. In case you’re not aware, Firefox leaks memory like a sieve. On the Mac this doesn’t cause too much of an issue normally, but on the PC it can be a real bitch, slowing the browser down to a crawl after a while. There’s no 100% solution to this problem but there is now at least a diagnostic tool. Some of the memory leaking is caused by poorly written extensions. If your Firefox memory leaking is chronic, you might try the Leak Monitor extension, which will help you identify which extension/s are causing the problem. Free, cross platform, and a tiny download.