Hi, some answers to some of your questions..
Re: RM Repositories - interesting idea, in the short term it is possible to install downloaded .deb packages with dpkg, otherwise I have connected one to the debian repositories and installed apps from there (I don't have the links handy atm, a quick Google should dig them out.) - I did this through synaptic ('sudo synaptic' from a console)
Re: CC3 connectivity - as mentioned, our software guys are looking at this sort of thing, more detail as soon as we can.
In the meantime, has anyone tried a scripted method for connecting to cc3 user shares / shared areas? - happy to provide any help I can..
Finally, Ubuntu... I installed Ubuntu on one of our test systems a couple of weeks ago (mostly from instructions here: http://forum.eeeuser.com/viewtopic.php?id=1285)
Acpi caused the biggest grumbles but as the sources are now available I would imagine those issues are resolvable. I had to use ndiswrapper to get wifi working.
If you are going to try any hacks it's well worth making a recovery usb stick from the included CD, it takes less than 5 mins to restore, and is great in an emergency..