Carholme,
I have too tried everything I know, I do occasionally get the triangle but that is not related to the home page issue. I seem to have made progress overnight though, I left my computer online all night so that the news block would continually update itself (similar to refresh but automatic) and this morning found an error message saying "Earthlink" needed to shut down due to a serious error. I use the earthlink toolbar for system initialization and loading the IE7 home page, I think the problem might be in earthlink so I will reload the Earthlink Total Access package and see if that clears the problem. I have heard that the Google toolbar can cause the same problem which is why I do not use it.
More to follow.....