I changed to Murrine and to gmail older version simultaneously - now I believe that what helped wasnt' Murrine, but changing GMail.

Officially Google doesn't support Firefox 3 yet; there are plenty of angry messages about it in gmail discussion groups.

On Thu, May 1, 2008 at 9:48 PM, Endolith <endolith@gmail.com> wrote:
I tried the Murrine workaround and it did not seem to help.  I think
this is a pretty major bug.  Browsing certain pages with Firefox is very
slow and there appears to be no way for me to workaround.

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Slow performance with Gmail
https://bugs.launchpad.net/bugs/217580
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of the bug.



--
Murilo Saraiva de Queiroz, MSc.
Senior Software Engineer
http://www.vettalabs.com