you're setting an interval which may be problematic and will be problematic if there's a mouseup outside your app. clearing your interval before setting it is always a good idea and in this situation will prevent a problem you probably haven't discovered yet.
Thanks for the tip, but it didn't resolve my issue.
See what's happening here: http://aspenchicago.com/Andys_Files/eStrike_Testbed/campaignModule3.html
Scrolling is normal until you select another category from the combobox. Select "Sales & Service" and try scrolling. You have to move the mouse slightly in order to get the finger to reappear and for the scrolling to work.
do you have components in your swf? if so, remove them and retest.
I resolved the issue by tracking the movieClips as buttons and changing the onPress to onMouseDown. I had to do that once before on a project a few years ago, so it took me a while to remember.
Thanks for your suggestions.