[deepak-kumar]

FF 25.x.x and FF Nightly build 28.0a1 (2013-11-19). I do see some improvements in latest dev builds.

[daliusd]

I don't have problems even with 25 version but again that might be very individual: different sites, different projects and etc.

There is one little thing you can do: enable all reporting in Advanced settings if you have not done that yet. Mozilla will get at least some information that might be later used for browser improvements.

[deepak-kumar]

Thanks for reminding me the option and yeah with js heavy application/projects FF is not doing well for me atleast.