Comment 2 for bug 191064

At Loïc's suggestion I added the gconftool-2 call to ume-config-common:
http://people.ubuntu.com/~smagoun/packages/ume-config-common_0.10-0ubuntu1.dsc

I didn't add it to midbrowser because there's a chance people will try to add midbrowser to a desktop system, and we don't want to override their default browser. ume-config-common comes with a warning about not installing to a desktop system, so I figure that's the safer option.