[mythtv] [bug]mythfrontend search list by channel or category

[Steven]

In the manage recordings/schedule recordings/search lists there is a 
problem that you can't browse or select anything in the categories or 
channel popup lists. This only seems to happen after playing a dvd with 
xine. Restating the frontend fixes things.

Strange but reproduceable on the 3 different machines I've tried.

steven