I have the same problem. On top of that, every once in a while the combo box
doesn't refresh properly and the large focus highlight stays on, eventhough the
item has been selected and the box is closed. Has Macromedia sent out an
updated Component?

I might have a solution, I read somewhere that you should include all the
components you are going to use in the base file, _level0 or maybe in the case
of the first post in the root l. They could be off stage and not being used,
but it's like the object has to be available from the beginning. This has
"fixed" the problem for me.