Yeah, Firefox has been my default browser on Maemo5 since its 1.1 release.

I wonder how many MicroB fanbois realize that it is mostly faster because the majority of it is always running in the background via the browserd daemon. The Firefox Mobile team has considered implementing such a feature for Firefox 4, but I'm not sure if anyone has opened an enhancement request for this. I would only want such a feature if I could turn it off. When I close an application, I want all of the memory it was using to be returned to the OS for other running processes.