I had a similar problem and just managed to solve it for me:
1) as you all described already, make sure to have the page you want as your homepage and the drop-down menu above set to "Show my homepage"
2) and this was my problem: in Ubunu, go to System->Preferences->Preferred Applications and make sure that the default web browser is set to "firefox" and not "custom".
I am pretty sure that I never changed anything here, but it might have been set to "custom" when I was upgrading to some alpha/beta releases of gutsy.
I had a similar problem and just managed to solve it for me: >Preferences- >Preferred Applications and make sure that the default web browser is set to "firefox" and not "custom".
1) as you all described already, make sure to have the page you want as your homepage and the drop-down menu above set to "Show my homepage"
2) and this was my problem: in Ubunu, go to System-
I am pretty sure that I never changed anything here, but it might have been set to "custom" when I was upgrading to some alpha/beta releases of gutsy.