[mythtv-users] Channel changes half way through a recording?

[malcolm]

I've had two shows now on two different days suddenly change channels half
way through a recording.  Both times it changed to some strange frequency
that's not really on a channel properly.  You get about 3 copies of the
persons face on screen and all kinds of lines and artifacts on the screen
and messed up sound.

Looking at the times of these messed up recordings they seem to relate to
about the time I watched some live TV on the second capture card.  Could
changing channels while watching live TV on a second capture card somehow
bleed over and mess up the first capture card?

I'm not even sure that's exactly what happened.  I just "think" I may have
watched live TV on the other card at these times.

I'm capturing with a pvr-250 and 350 if it makes any difference.

Thanks
Malcolm