MMI problem?

Weird thing happened yesterday.
Turned the car off (S line 2009) and went into the local car shop for oil.
Came out and started the car up. The radio never came on untl I pressed the volume button!
The MMI was on the "Car" setting with the suspension levels displayed when I switched off and when it came back on it had a blank screen that said "Gateway not available"??

I headed into work, switched off the engine and removed the key and the radio stayed on?
On the way home after work it seemed fine, no strange messages and the radio seemed normal.
Came out this morning and the radio was at a different channel than when I left it?
Do you think I have electrical problems? Or is this Q7 haunted?
:aargh4:

Hi Bill

Probably worth resetting the MMI

Hold down:

Setup
Large centre button
Top right button next to the large centre button

This Ctrl Alt Del style of reset has worked for me a few times...

check for fault codes relating to sticking buttons on the mmi consule
Go to address 07 and post fault codes