Ubuntu Downgrade to Firefox 0.9.3

[AndersAA]

To debug this problem you might wanna look at gentoo's bugzilla, they 
often do a lot of tests with different combinations of cflags and system 
configurations.

>Well, if we knew that, we'd all be rich^W^W^Wbe shipping 1.0PR.
>Seriously though, the upstream bug report is showing reports from people on
>at least OS X and many linuxes. It's possibly optimisation related but we've
>tried building mozilla without optimisation and that doesn't change the
>problem.
>Enough people are seeing the problem that it's simply not practical for us
>to commit to supporting it, coupled with the other problems I noted.
>Cheers,
>-Thom
>
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