I was fooling around a bit with the screen rotation support for Maemo this morning on my N800 (didn’t want to risk mucking with the N810 yet). I would put up some screenshots, but for some reason the screenshot applet is messing up in my version and trying to still take a landscape image. Not sure how those screenshots on the sse2 page were taken, looks like they’re running the same load applet with integrated screenshot that I am. The instructions on that page worked great for me, booted the kernel without flashing, install the xomap package and use the installer for the rotate applet.
There’s still a bunch of funkiness for me: onscreen keyboard on the N800 works, but is really smushed, orientation of the dpad doesn’t change so you have to take that into account, can’t really use the home menu rotated cause it goes straight off the screen. Some of this stuff could be hacked around if the base packages of the OS2008 user environment were also open source. Hint. Hint.
Generally though the rotation itself works fantastic. I installed the Firefox release to muck around with that, but forgot that it doesn’t have an onscreen keyboard. Have to dig out the bluetooth keyboard to poke at it. IUI applications look much slicker on the rotated browser for example, with the screen format being much closer to the expected.