Some links will redirect you to a Stack Overflow error site even though they're correct (as in DOM/HTML representation).
Test cases which now work:
Link in question body here: http://web.archive.org/web/%2A/ Link in comment: What was lab.msdn.microsoft.com?
Test cases which still don't work
Strange enough, I can't reproduce the problem with other links. I hope some SO developer out there can help.