Many websites (Ubuntu machine) are not opening or loading properly as they in IE.
Many sites are not compatible with firefox
Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
*Edit > Preferences > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
*Edit > Preferences > Privacy > Cookies: "Show Cookies"
Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.