Problem pausing video on iOS when a meeting reminder happens?

I'm trying to figure out why my mp4 video file is not pausing when my app has lost focus and I have told it to pause?

I have created a video player for the iPad using netstream and StageVideo.

I have set it up to pause the video when the Event.DEACTIVATE is dispatched.

So when a meeting reminder happens from the Calendar app, my app loses focus. The video loses sound but doesn't pause. I cancel out of the meeting reminder window, the video still plays w/o sound and after a few seconds the video pauses. And then the video just goes away, (this last part may be an unreleated issue though).

I added a few trace statements in the code and I see that after receiving Event.DEACTIVATE, the video player does call "netstream.pause()"., but the video isn't paused immediately.

Another thing I noticed is that the video player is behaving like it is playing streaming videos instead of progressive downloaded videos. In other words, I can skip to any part of the video and the video will play immediately. I am not using streaming videos, so I assumed that this is just the behavior of iOS somehow. I add this fact in case it relates to why my video won't pause immediately when I tell it to when the application has lost focus.

thanks,

Jack