I have 4GB of RAM and base on wikipedia, firefox minimum requirements is 512 MB https://en.wikipedia.org/wiki/Firefox I did some reading on some message boards and people say firefox gotten really bloated and some saying even having memory leaks. I have firefox open and 6 tabs, no video!! Base on activity monitor I have only 350 MB free!! Wow!! With firefox not open I have now 2 GB free!! If I open firefox with three tabs now it saying only 1.6 GB free It clear firefox is eating up all my RAM and has some memory leak. The computer OS is running fast and firefox is running fast, but my RAM is getting eaten up by firefox. As a test to test for memory leak!! I open firefox and had it running for over weak and not closing for over a week!!! I had firefox open many tabs of HD video on youtube after many and many HD video cover 100 HD videos on youtube firefox starts to get slow!! Yes even when tabs are closed. To fix it you have to close firefox and reopen it. How can I fix this problem with firefox? Can this memory leak be fixed? I know firefox well but don't like what has become of it. I hear that people are starting to move away from firefox.