he he, nice surprise..
months ago(jan 2011) my tweet count had suddenly gone to some 200-300 tweets..
due to some bug in the site..
so i posted about it in their forum and hoped for the best..
this is what i see today-
and just like that, the count is accurate again :) .. er i think..
but still.. it is a weird bug to have
if your having this problem post a comment on this forum post - Tweets Appear to be Missing (Known Issue)
just remember it took 2 months for my issue to get resolved
anyway hope it helps..