Inside MC's annoying box animation

I have recently got Flash 8 Proffesional and keep having a really annoying issue. When I double click a movieclip i get a really annoying box animation that is really slow, when I had flash 8 before it didn’t do that is there anyway to turn it off. Thanks in advance

Maybe more detail -

when I double click a movieclip, and “go inside the movieclip” when i last had it it just went striaght in now there is a animation with a dash line box growing / shrinking until it meets the endge of the page then i go in side the MC