as you have three browsers all on the fritz, it’s probably a add-on that’s causing it.
Probably Adobe Flash player.
Try to download and install the latest version:
if that doesn’t work, try this:
TO backup your firefox settings, go download and use mozbackup, http://mozbackup.jasnapaka.com/download.php
IDK how to backup Safari.
then uninstall, then reinstall firefox. same for safari.
Also, try updating Java plugin before uninstalling and reinstalling browsers:
Also, you can try to run Firefox in safe mode with no plugins: http://kb.mozillazine.org/Safe_mode
select “Start -> Run” (on Windows 7/Vista, enable the Run box, as described here) and enter the following in the Windows Run box:
For Firefox, one of these:
“C:\Program Files\Mozilla Firefox\firefox.exe” -safe-mode
“C:\Program Files (x86)\Mozilla Firefox\firefox.exe” -safe-mode