[CentOS] Firefox slower on GMail since update to CentOS 5.5

[Mathieu Baudier]

> I had somewhat similar problems. This is a shot in the dark, but do
> you happen to have a Nvidia controller in your system? If so, you may
> have been affected by this bug:
>
> http://bugs.centos.org/view.php?id=4335
>
> There is a workaround which solved the problem for me.

Thanks for the hint!
I tried the workaround but unfortunately I still have the problem...