Windows 7 - Browser malfunctions on fresh install

Just finished installing Win 7 I installed Firefox and it worked for a while then it started crashing. Doesnt seem to manner what version never even opens it just crashes.
Here is the Message

Add-ons: {972ce4c6-7e08-4474-a285-3208198ce6fd}:3.6b1
BuildID: 20091029171059
CrashTime: 1257710118
Email:
InstallTime: 1257669547
ProductName: Firefox
SecondsSinceLastCrash: 39606
StartupTime: 1257710116
Theme: classic/1.0
Throttleable: 1
URL:
Vendor: Mozilla
Version: 3.6b1
This report also contains technical information about the state of the application when it crashed.

Then I tried Chrome and it loads for a few short seconds then the browser goes black and it says
Aw, Snaphing went wrong with this web page to continue press reload or go to another page.
Problem is it 99.9%of the time workd I did find one of my book marks that wirk.

Anyone got any ideas tried reinstalls
Jim
P.S. Opera works just fine and IE8 also

Try launching firefox in safe mode. If ok its an addon


Ken

Crashes in safe mode also
Same message
Add-ons: {972ce4c6-7e08-4474-a285-3208198ce6fd}:3.6b1
BuildID: 20091029171059
CrashTime: 1257717059
Email:
InstallTime: 1257715601
ProductName: Firefox
SecondsSinceLastCrash: 34
StartupTime: 1257717058
Theme: classic/1.0
Throttleable: 1
URL:
And now all of a sudden Thunderbird Fonts have gone real small and it won't let you adjust them back up
Jim

You are using the beta version of firefox3.6. This means that it is still unstable, you should try installing Firefox 3.5.5
You could also try to delete firefox settings and preferences by going to:
'C:\Users\[User Name]\AppData\Local', delete the folder 'Mozilla' (these folders are hidden)

'C:\Users\[User Name]\AppData\Roaming' delete the folder 'Mozilla'
then completly remove firefox then reinstall it

The problem may also be caused by an Antivirus

Yup tried all those plus a bunch of different versions of Firefox and nothing worked. Today I figured it out though. It was a bad or missing font.
Replaced the base font set and bingo all my problems were solved it even fixed google chrome.

JIm

Jim, you said you replaced your Base Font Set. How did you do that? I am missing my Arial font. Thanks.

I had first upgraded my daughters computer so I just grabbed her font set and overwrote mine.
JIm