whenever i am filling out certain forms, for example, when i type in my username and then press the tab key to jump to the password box, firefox crashes.
i first noticed this when i went to log in to my school's website. i typed in my username, pressed tab to go to the password box to type in my password but it said firefox.exe has encountered an error and has to close, send error report, etc.
then i tried to log in to my online banking website, typed in my username, pressed tab (to move to the "Go" button link, which takes you to the next page where you type in your password) and it crashed as soon as i pressed tab.
again, when i went to log in on this forum, i typed in my username, pressed tab to move to the password box, and firefox crashed.
some forms it works fine, others it crashes - WTF!?

this is extremely weird and i have no idea why this is happening or how to fix it. mad props to anyone who is can help with this.
THANKS!