FIREFOX MEMORY LEAK Thursday, April 20, 2006 firefox.exe, after running for 24 hours (maybe more) with several tabs open (one of them Pandora.com, which contains a Flash music player). Mem Usage 473,020 K VM Size 1,459,624 K After closing Firefox, memory usage stabilized at around 255 MB, according to the Task Manager. Apparently, there was/is a memory leak in Flash Player. Some leak! See firefox-closed.png for a screenshot of the task manager.