I can take a look at it a bit later, but at first glance it looks like you need something to clear the wait() function. If I don't push any buttons it works fine.

However when I start clicking all over like you said, it starts to jump all over the place...I have a feeling it is because the wait() function has been started...5-6 times at that point and it starts advancing when the intervals finish.

Hope this helps to get you on the right track, I'll take a look at it when I get home tonight.

Cheers,

Scott