Just ran SpeedyFox latest up-dated version 22.214.171.124 and it does work and it did speed up my FireFox. You can also compact FireFox database using CCleaner. Just check the Compact Database option under FireFox and youre done. What ever SpeedyFox does I haven't read on yet but it does speed up your browsing a lot. Nice to know that give it a try and try CCleaner Compact Database option and let us all know what you experience. Does FF hog much of your resources (memory) try Firemin 126.96.36.1993, this little tool will free what ever FF hogs and it is extremely light and does what its meant to do. Been using it for a few months with no issues what so ever.
SpeedyFox didn't really speed up Firefox at all and didn't perform any better than IE9 overall with SpeedyFox.
While I won't get into debate on if this makes Firefox faster than IE even as tests show, it doesn't really matter. All browsers test differently in certain areas and over all load times can be mere milliseconds of a difference so there is no extremely slow "up to date and maintained" browser unless there are other issues on that system or other problems.
That said, I didn't see any rapid improvement with SpeedyFox on 3 systems, once again, pertaining to my above statement, it's certainly not enough to wow me. Most of us do not feel a millisecond difference and I believe that's all Speedy Fox really adds if at all.
I haven't had any slowdowns or other issues with Firefox and when I click, it's there and adding SpeedyFox didn't show me anything different. It's free, maybe it will speed up other peoples' browsers, I don't know but if a browser is loading correctly as does mine, I honestly don't feel you will see a difference using SpeedyFox.
Firefox is still just as slow as when you first install it as it is after you use this utility. I don't care. I prefer Internet Explorer 8 anyway. Internet Explorer 8 is fast after tweaking it because Microsoft knows it's own OS and knows how to make their programs run fast on it.
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