Please help with my Flash Nav menu

Hello there, I have been going crazy trying to figure what is wrong with this.
To give you an idea, when a button or category is clicked, a sub nav opens and stays open for a number of seconds using set interval and then closes.
It works fine for the first few times and then it closes a lot faster. ( too fast )

Also even when nothing is clicked, it seems to loop over to the first sub menu by itself over and over again, what is going on!

Please help, I have lost so much sleep on this already.
Thank you in advance.

I have included both the swf and fla file.