Yes, Maemo 5 has a desktop environment called Hildon that is loosely based on the GTK+ toolkit, like Gnome, but unlike Gnome (or even previous versions of Maemo), they have broken the UI in many places to the point where just about every desktop app that I have tried is unusable in at least one core area.

The most broken thing in Fremantle is the dialog box. Without using Hildon-specific widgets, most GTK+ dialogs are barely usable, and some dialogs are completely unusable. And I don't see any workarounds, like in previous versions of Maemo.

I've pretty much resigned myself to waiting for the devices to start selling before issuing a new version of Easy Debian, so I can get some help from other hackers to figure out how to work around these very difficult UI problems...