I just submitted a post here titled "Visio2007 crashes when copy/paste objects".
What is interesting here is that I am running on a Dell Latitude E6510 / Win 7 as well!! I wonder if we are on to something here?
My copy runs OK until I do any Copy/Paste object operation. Desert Guy, could you confirm whether yours' crashes when you do a copy/paste?
As I said in my post, I've already tried uninstall/reinstall and applied SP2. Same outcome: crash.