System lock up firefox and ATI Technologies Inc Radeon XPRESS 200M 5955

[NiftyFedora Mitch]

Seamonkey works but Firefox triggers a system lockup.
Is this old news or am I the only one.

01:05.0 VGA compatible controller: ATI Technologies Inc Radeon XPRESS
200M 5955 (PCIE)
$ uname -a
Linux hplaptop 2.6.29.6-217.2.8.fc11.i686.PAE #1 SMP Sat Aug 15
01:07:59 EDT 2009 i686 athlon i386 GNU/Linux

HP Pavilion zv6000
$ cat /proc/cpuinfo
processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 15
model		: 47
model name	: AMD Athlon(tm) 64 Processor 3200+
stepping	: 2
cpu MHz		: 1000.000
....

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        NiftyFedora
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