Head Scratcher

I have a head scratcher. I have a dwg with mulitable viewports. I have been work on it about 40 hours, I put a new viewport for a detail and it was creater on the layer text. I changed it to defpoints and that's when I noticed something wrong. I went to move the vport but when I clicked on the vport boundary, it was like it wasn't there. I checked the other vports and they were the same way. Now, when I double click on the inside of the vport, it opened up and when I double clicked outside the boundary, it close. I can turn them off and on so everything works like it suppose to do except when I try to click on the boundary, nothing. any ideas what I did or not did? O I created a new dwg. Drew a circle on model and create a vport in layout. Put the vport on defpoint and every thing is fine. So concluion, it's in the dwg. I can work around the problem but it's the not knowing. 

Also, can anyone tell me is there a way to close a vport without double clicking outside the vport boundary. Example: you're zoomed in in a vport to make a few minor changes, without having to zoom out so you can d-click outside the vport boundary to close it, is there a command that will close it?

Thanks

David