Similar problem, but I've just updated to Firefox 4.01, running on Windows XP. Being more specific about the problem, when I remove modules of the homepage that I don't want (sport, music, children, ...), select the "Customise" tab and click on "Save", the modules I removed are restored - just as if I'd clicked on the link to restore the default homepage :(

Identical symptoms to those reported by LesleyMay, but I'm using version 3.6.17 (tailored by Canonical), running on Ubuntu Linux version 10.10. I wonder whether this is a problem with the BBC web site rather than with Firefox?

Such details are probably stored in a cookie.

Clear the cache and the cookies from sites that cause problems.

• "Clear the Cache": Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
• "Remove the Cookies" from sites causing problems: Tools > Options > Privacy > Cookies: "Show Cookies"