Firefox 22 running very slow on windows 7 but no problem in linux. Help

Firefox 22 is running very slow ( rather stalling forever) on windows 7.
I tried resetting option from the "Troubleshooting information" menu and also tried disabling "Hardware acceleration" but still having the problem.
Takes almost a minute ( "New window not responding"..) just to try any option..like opening a new tab.
I have same version on linux mint and but FF runs smoothly.

Sorry, not an option. As I said, I have binned FF22 and gone back to 21 -- and it works just as fast as it always did, corrupt profile or no corrupt profile.

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