Comment 2 for bug 208232

In the Misc section of the Inkscape Properties dialog, there is an option to make the icons smaller. I think it should then fit in a height of 480 (undocked).

I'm not sure that Inkscape is really usable at 800x480 though, as some of the dialogs are very large. If you find problems using Inkscape at this resolution, bug 168648 is probably the best place to comment.