My V6 also suffers from getting stuck at the initial 'Starting Up' screen - I have just rebooted it no less than 5 times before it finally displayed the guide and live tv.
When I spoke to Second Line Support this morning, the guy told me that this is indeed a known bug. Is this true?
If it is and the ONLY fix is to reboot - what is the point if it is just going to get stuck again at starting up????
Luckily I have an engineer coming tomorrow night to swap the box however, if this is indeed a bug, the second box is likely to suffer the same bug.....