Lately I've noticed that the longer I use my Firefox browser during the day the more memory it uses up. If let alone it eventually takes up so much computer memory that everything on my computer slows to a crawl and I have to either exit Firefox or even reboot. Is there any way to stop this? I'm wondering if there are any Firefox features or add-ons that I can do without. I'm not looking for anything elaborate out of Firefox, just basic internet usage.