[mythtv] LiveTV buffer not clearing when changing channels

[Endaf Jones]

When I jump to LiveTV, a picture shows up.  However, when I change to
another channel, the screen goes blank and when it comes back I see
the previous channel AND I can see the change channel script executing
the needed digits on my IR remote.  It's as if the LiveTV buffer is
being turned on again too early (shouldn't it be after the channel
change script returns?)

Is it just me?

Many weeks ago this never happened.  I'm running a SVN from today. 
PVR-250/150 cards, DVD-S.

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# Endaf