Just an FYI, for anyone who happens to be looking for it. I recently got a Logitech DiNovo Mini keyboard. Comes with a Bluetooth dongle, and I got this particular gadget for using with a media center PC.

First, it did work with openSUSE 11.1, but had to put an entry into xorg.conf, based on some documentation I found through Google. However, with 11.2, it worked right off the bat. NO configuration needed. All media keys (play, stop, etc.), worked, along with volume keys, and mouse pad. The combination of it, with xbmc, is awesome. MythTV would be great if I had a TV card, and wanted to record shows, but I mainly wanted music and video playback. XBMC was a LOT less configuration, and was already in the openSUSE repos. Range on the keyboard is easily over 20ft., and there's no noticeable lag.

EDIT: while saying it works fine with openSUSE 11.2, it's also worth mentioning that it'll probably work just fine with ANY current distro, too.

I confirm that it's working as well under Gentoo, so it will probably work with anything. I didn't configure the multimedia keys.
The only "problem" I have is that sometimes after charging it (~1 per month) I have to extract and re-insert the battery so that it connects. This doesn't disturb me and don't actually know if that's due to the fact that the one I bought was one of the first ones produced... .
It's a reaally nice, small, fancy keyboard.