Firefox 1.5_5.1 now crashed system on startup

[eoghan]

On 12 Dec 2005, at 20:36, FreeBSD Maillists wrote:

>>>> I am using FreeBSD 6.0 release and Firefox 1.5_5.1.  With my old  
>>>> kernel
>>>> which did not have SMP and hyperthreading enabled, it would just  
>>>> run
>>>> the cpu up to 100% upon startup.  Now with SMP and hyperthreading
>>>> enabled it locks up the computer and I have to give the computer  
>>>> a hard
>>>> power down.  The cpu is a P4.
>>>
>>>> Any hints as to what might be going on are appreciated.
>>>
>>> It's a new bug (with workable exploit) in Firefox 1.5.
>>> Delete file history.dat from you Firefox 1.5 installation.
>>>
>>> http://www.softodrom.ru/win/blogs/b717.shtml   (In Russian)
>>> http://www.securitylab.ru/poc/extra/242789.php (In English)
>
>> I went and tried that, but I still ended up crashing my computer.  I
>> wonder if I should delete the whole ~/.mozilla/firefox directory?
>> Perhaps it is corrupted.
>
> Quote from http://www.securitylab.ru/poc/extra/242789.php
>> The next time that firefox is
>> opened, it will instantly crash due to a buffer overflow -- this will
>> happen everytime until you manually delete the history.dat file --  
>> which
>> most users won't figure out.
>
> Maybe problem in something other...

I running 6.0-RELEASE and just upgraded to 1.5. It doesnt open for me  
at all.
Where do you find the history.dat file?