A few of us have had this issue in our office. I was wondering if anyone else has experienced this and knows a solution.
We have reshaper 7 installed in VS 2010. For a legacy vb app its so slow because of all the errors, we disable it. When that's done certain pages have issues where every time you save the page it auto copies certain sections of the markup over and over. So you end up with hundreds of repeated lines of markup.
I've worked around this by making one minor save at a time, closing the page and then re-opening. If I work on the page for more than one or two edits, the auto pasting starts up again.
Another developer spent a day removing and resinstalling VS, but I don't think this is the culprit since now others have the same issue.
Does anyone have any ideas on this?