.swf playback chppy at end of the movie

I have a player.swf which has play and a pause buttons. This player loads 
external .swf movies. Each movie is about a minute long and I cut them up into 
3 to 5 movie clips. So, the movie's main time line uses 3 to 5 frames, at the 
end of a movie clip I tell it to go to the next frame in the main time line. 
The strange part is on the the last frame of the main time or somewhere in the 
last movie clip the animation freezes up, well sort of. It plays really slow, 
almost like the pause was pressed for a minute then the play button was click 
really quick then back to the minute long pause. I'm having a really hard time 
finding the problem since the majority of the time it plays fine. Please watch 
the movie and let me know if it feezes up on the last part of each section. If 
anybody know this problem or has any questions please let me know. 
http://www.paysimple.com/demobeta/ http://www.paysimple.com/demobeta/

I barely noticed, but i do think I know what you're talking about. The frame 
rate looks pretty low, like 12 fps. So if its what I thought is was, the number

zooming in at the end, I think it just might be the ease in conjunction with 
fps that causes the stutter.

 my 2 cents.