Yes IE had been doing that to me too, i run windows7 64 bit ultimate, with full updates, and using BT as my ADSL providor on a full hard wired ( ethernet ) network ( to avoid loss and maintain privacy ) i downloaded BT Help, a program it provides to check your PC and internet links.
running it, said there was a " a problem " with IE, to do with compatability. I thought about that a while and considered it might be because i have two versions of IE, one for 32 bit as well as the 64 bit..
But really i have no idea of the cause yet, because BT help gives one a button to click, to fix it.. and it did.. ive not had that problem again now since..
i do find that old addresses, links for example, also make IE do that.. i had to use google to get here, because IE said it could not provide this web page:
which was a link to a wi fi topic..
and none of the other old links worked either..
BT Help, immediately saw that ie could not display the page, and offered to help fix.. but it was easier just to find pcadvisor on google.. :)