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I also have one index page in two versions, I'm not sure but I think the change (in title) has been made about one month ago.
The page appears on different serps for different search terms.
As FAST has stated in another thread, they expect another update within a week.
Other bad serps having same domain listed 20 times with different subpages (SPAM STYLE) is quite common, so I think FAST needed a full scale test period of one week.
Exciting what the new update will bring.