Leven, you must be misunderstanding me. The new params given in your Reply #1 do speed things up a lot, thanks for those and I am agreeing with the other posts above.
But FasterFox slows things down because of its overhead, both memory-wise and being attached to a browser that is already just about at the limit without FasterFox attached.
So after my tests I'm saying that IceWeasel is overall slower with FasterFox, and after uninstalling it I went back to the params you gave in your Reply #1 and undoubtedly is faster with those params than without.
But initially it was a good call by you about FasterFox in case it did speed up web sites.....
Unh.