@jcompagner: That's a warning coming from the Gtk engine (the underlying component that maemo uses to render apps). It's like it is not able to determine the colormap depth (number of colours the screen is able to draw). One test you could do is to download http://feedingit.marcoz.org/webbrowser.py to the phone, and then run it from the X-Term window as "python webbrowser.py" and see if you can navigate one of these sites.