FLA taking forever to save (and edit)

Question

I've got a reasonably uncomplicated FLA file, a couple of
megs, no audio, all vector art. It's a quiz, so there's some coding
but nothing that would be considered intimidating by an
intermediate Flash programmer.
The only thing in any way remarkable about the file is that I
am using a single movie clip five times onscreen to represent five
different characters. Different faces and expressions are called
for each character in script. It's all nested movie clips. But
really no big deal compared to some of the Flash work I've seen.
So the problem is, in a couple of movie clips that are a bit
more complicated like that, even simple editing such as adding a
keyframe takes literally ten minutes. Flash freezes while this
happens. And saving the file can take over 20 minutes.
Yet exporting the SWF happens normally.
All these operations with other files happens without any
problems. It's just this file.
Has anyone experienced this? I have looked online but can't
find anything referencing such an issue. I'm sure it's the way I'm
building the file but I'd like to know what the issue might be.
Thx D

Answer 1

Ugh...that took a while to try...but alas, no dice. There's
something in a movie clip, I'm not sure if it's how Flash sees
it/encodes it when saving. I have no idea. But it's not one of the
typical CPU/RAM issues...I'm not a novice, I've done hundreds of
these for clients so this stands out for me. (as an aside, the file
size, my clients seem to be okay with it...I guess their target
user is all about the broadband : ) Thanks D