Playback hiccup/freezes on frame

I finished my flash logo for work and am now having a problem when trying to publish/export/play the file. On frame 110 when the first shimmer crosses the "M" I get a hiccup on that frame, it should be a smooth transition. Once the video plays once the replay works fine, but this is going to be the intro to our website, one time view.

The playback was working great the day before. Today, after some more tweeks, not so good. Only thing I could fathom was maybe too many masks (added 1 more today, 3 in total) were being applied but I tried removing all masks and am still having the same problem. Any ideas as to what is causing this?

Visit the link to view intro:Metagraphics Intro

It stopped a couple of times for me and I've got a beast of a machine. You've just got too much going on that flash can't render it all as fast as you're wanting it too. What's the framerate? Maybe tweaking it will help or simplifying the animation.

Alright, its nice to be back! Sorry for the delay in response. So, I looked over the file again today with a fresh pair of rested eyes and figured out the problem. I thought about what you said and thought it was odd that when I added the new "shiney" M I started having the problems. So I checked out my original png file and found out it was a wopper: 22x20 in. @ 120 dpi. Never occurred to me that doing a transform on the image in Flash would still try and crunch those numbers. I reduced the size, updated my link and now its smooth sailing. Thanks for the help mneil.