[mythtvnz] Every program on second card is "unknown"

[Nick Rout]

I have two skystar 2 cards, and when I first set it up both cards
seemed to know about the EPG data. Now on the second card every
program is "unknown" as though it doesn't know about whats in the EPG.

Both cards are set up identically and have the same XMLTVID, CHANNUM
and CALLSIGN.

This is making recording two channels at once impossible, and is
frustrating the hell out of me. WAF at all time low as it only seems
to ever record the programs I like (cos hers start 10 minutes later or
something). Help!