This happens in my (old, regular, not the new one) house. An object is on the floor, I use the mouse to drag it into my inventory and Flash + IE hangs, then eventually I get the (!) page. Using the keyboard command to pick up works fine. I have tried on a street and do not have the same problem, just in my house. I've tried different objects, same problem. Works fine in the new house.
Update: tried it on the floor of a friend's house (snippid), same problem. Maybe it has something to do with having a ton of objects on the floor ... but I don't know anyone with a clean floor to try :-).