From what I understand (I dont have one, but have read about this problem)
The Firestations have a custom video driver to enable UI2 - however they use a custom debian kernel and currently neither MythTV nor Kubuntu will run on them.
I have heard, however, that you can set them up as a regular MD using UI1 and have full functionallity (you'll just have an uglier interface!)
I know fiire is trying to fix this, but until it is figured out, you need to decide whether you want UI2 with crippled functionallity, or UI1 with full functionallity.