Muxes have held over night!! Few things I've noticed - the BBC Mux is on 801.833KHz - but the first time I manullay entered it I didn't have the most accurate info and added it as 801.800. The mux started at 100%, added all the services, but then drained away. The other 4 didn't. I also set most of the other settings to auto.
I then found more accurate settings for FEC and other gubbins - aswell as the more accurate freq. and it's held ever since.
Anyway, I'm made up it's working
... just hope it holds.
Had a few crashes where tvheadend needed a restart - but I've not installed the latest SVN changes to xbmc yet.
Anyway, my new Mux info (this is for Winterhill UK only) is:
801833 8Mhz QAM64 8K 1/32 None 3/4 3/4
770000 8Mhz QAM64 8K 1/32 None 3/4 3/4
794000 8Mhz QAM64 8K 1/32 None 3/4 3/4
778000 8Mhz QAM64 8K 1/32 None 3/4 3/4
746000 8Mhz QAM64 8K 1/32 None 3/4 3/4
All the settings have been made the same, for all muxes (apart from the freq.). Before the switchover they were all different, but looks like they've unifed it. Also the 6th Mux has been set aside for DVB-T2 - Freeview HD!! Altho there's no DVB-T2 tuners around atm. Anyway, hope someone finds my investigations helpful - I just hope it stays like this.