[mythtv-users] Commercial skipping - what is supposed to happen?

[ffrr]

When I record a show, the process to mark commercials starts and 
completes.  The show has the icon to indicate commercials are marked, 
but when I play it, it plays, showing the commercials and everything. I 
have it set to use 'All' methods of detecting commercials.

I have the play config item set to 'Notify, but do not skip'.   I was 
expecting it to pop up a message when a commercial comes up, but ... 
nothing.

How is it supposed to work?