Firefox was known to use up more memory than IE, especially if you opened a lot of tabs at the same time. But suddenly it now acting as a memory hog (at least on my computer) with the memory utilization going as high as 260MB with just 4 tabs open and funny thing is it does not go down if I close all but one tab. It acts like a runaway process and keeps on eating up memory and CPU till the time it becomes unusable. I then have to close the window and open a new session for my PC to be usable again.

Is this a vulnerability in Firefox that could be exploited I know not. I am not an expert in reading code and finding out bugs, but I know enough to identify a problem when I see one. I intend to submit this to the maintainers of Firefox after I do a little bit more research to ascertain that it is not a problem with my computer.