V2 ComboBoxes lock up when second is clicked

I have an appliation with 3 comboboxes in a row, each populated, each working great.

I can click on one, select things, etc. If I ever try to click on the second one, it locks up and I get that there is a script running and I have to abort it.

If I use the old MX components combobox, it works perfectly, making believe there is an issue in the V2 component.

The only code I use in regard to it is:

removeAll()
length
getItemAt()

so nothing really crazy in my actionscript, very basic…

anyone else have this problem, or know of a solution?

thanks

Josh