I was looking at an answer, I went for its [revisions][1] and... 
The Revision#3 looks really strange... I don't have much time to try to investigate what is the reason for that.. But I'd like, because I've never seen other issue like this in SO before.

Firefox 3.6.3 :
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![Looking weird in FF][2]

Internet Explorer 7:
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![even worse than in FF][3]

LINK:  http://stackoverflow.com/posts/3073819/revisions
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PS: I suppose this could be an issue generated when decoding from this plain text to html.. Is SO having problems whith some text-formattings?

  [1]: http://stackoverflow.com/posts/3073819/revisions
  [2]: http://i48.tinypic.com/iw22vo.jpg
  [3]: http://i47.tinypic.com/2i1iber.jpg