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I upgraded firefox to version 3.0 and I launched it. Then I closed it. The 2nd time I launched it, it crashed I submitted the report but it keeps crashing without even opening.

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I upgraded to Firefox 3.0 yesterday and it crashes repeatedly without even opening. I saved the file in "C:\Users\Mommy\Appdata\Local\Mozilla Firefox\.

I upgraded to Firefox 3.0 yesterday and it crashes repeatedly without even opening. I saved the file in "C:\Users\Mommy\Appdata\Local\Mozilla Firefox\.

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Firefox 3.0 and firefox 3.6 are both very very out of date and have lots of known issues.

First, you should download Firefox 11 from www.getfirefox.com. Install that version. does it still crash?

Try to start Firefox in Safe mode. This mode disables all extensions, user customizations, hardware acceleration, etc. temporarily for diagnostic and troubleshooting. If Firefox works find in Safe Mode, then this is likely an add-on issue. Restart Firefox in normal mode, then type "About:addons" (without the quotes) in the address bar. Disable your extensions one by one, restarting Firefox between each one, until you find the trouble maker. Once you do, you can disable that add-on and report the issue to that add-on's developer.

A few other basic trouble shooting things you can try is this: Run all Windows Updates, install all needed service packs, etc.

Update your graphics driver (Firefox uses your graphics card for some rendering, and an out of date graphics card driver can cause problems. https://support.mozilla.org/en-US/kb/how-do-i-upgrade-my-graphics-drivers.

Update all your plugins (Flash, Java, etc.): http://www.mozilla.org/plugincheck/.