I've been messing around today trying to get a nice dev enviroment setup. I connect it on usb to my FreeBSD desktop and enable PC Suite Mode so that the USB networking starts, then set an ip on the usb0 interface on the N900 and one on my desktop.

Use sshfs on my desktop to mount the home folder locally so I can use my text editor (NEdit) on a sensible keyboard to edit/hack source. And also have open an ssh session to the n900 for compiling in the qchroot.

Perfect, it's just like working locally on my desktop

Its a surprisingly nippy little machine, a lot quicker at compiling than I thought it would be and with this setup its way more convienient than working with the SDK in a VM. Compile directly on the device and then run it.