I'm seeing something similar (possibly the same) of a previous bug. Essentially when I have a video podcast playing and I get a phone call the podcast pauses as normal. Then sometimes when the call is ended it attempts to start up again. I haven't figured out exactly when it tries to start and when it doesn't. Sometimes, when it tries to play after the call, it will get stuck. That is, when viewing the PT app I only see a black screen like what the media player displays for a brief moment before actually starting playback. I don't know of a way to kill an application on BB, so I end up doing a hard reset to be able to use PT anymore.
Before, I was seeing the video start and then stop and the whole device froze. This is different in that I can still use the device, just not PT, and the video never starts, just the blank media player screen.
This happens on Blackberry, details in sig.