So i've been following the PyMaemo quick start guide and I'm having trouble connecting to my n900 with RBrowser on my mac. There wasn't a guide for usb networking for Mac users so I'm not sure which IP address to use to connect to the device and I've already enabled usb networking on my n900 with "ifup usb0". Any help would be appreciated.

thanks.

I'm not really sure what your question is, but I regularly go back and forth from my mac and my n900 with the following commands:

ssh
scp
sshfs

For sshfs, I use MacFuse and MacFusion on Snow Leapord. If you wish to do the same, you'll have to fix things by following these instructions.

And in case you didn't already know, when you're doing any of the above commands to your n900, you're always logging in as root.