@ RetoPMWF and afaq, I didn't even know you could get back using the power button, thanks!
Me neither. I had no idea that pressing the power button when in the menu had any effect... I just never did it. How embarrassing! Making fun of a new user who doesn't know how to do it my way... and not knowing the power button thing myself.
I have searched in the N900 documentation and on the web, yet, I have not found a description for this neat way to switch application menu screens.
Tapping the available application screen at the outside (left, top, right, bottom) will switch back to the desktop.
If you are in available application screen two (you pressed the More... icon), tapping the screen left, top, right or bottom will take you back to the first application screen. Another tap, and you are back at the desktop.
OMG, you're an absolute genius! Now I don't have to powercycle the phone every time to get back to the desktop. Do you have any more mindblazing tips and tricks?