Since I "upgraded" to Firefox 10, computer is very slow, often freezes; also, screen keeps showing warnings that Firefox is using too much memory
My computer has memory of 2.80 Ghz, 960 mb of RAM. About a week ago I "upgraded" (hah!) to Firefox 10, and since then my computer runs very slowly, and often freezes up completely for several minutes. And a box keeps popping up on the screen telling me that Firefox is using a very large percentage of memory (amount varies). What can I do? (Is is possible--how?--and desirable to go back to an older version of FF, and, if so, which one?)