I'm using Ubuntu 11.04, gnome 3.0 and firefox 4.0.1 (along with 6.a1 build).
Problem happens when some outside application (banshee trying to access last.fm, empathy open links, etc) tries to open a web page. Firefox should open that page but instead it opens about:startpage. I'm not sure if this started happening on 11.04 or 10.10, but i know it's starting to get annoying.

Unfortunately googling didn't help because i just cannot specify my problem (what's use of googling when you don't know what to google) . If You could redirect me to right place or help me fix this it would be much appreciated.

Thank You!