The markets are buzzing today on the rumor (here and here, for example), that either IBM or Cisco might try to buy Citrix. Of course the world is full of rumors, but there’s at least anecdotal evidence that people are listening to this one as Citrix’s stock moved up about 7% today, which is the biggest single-day move they’ve had in a while. (Although half-way through the day the stock has dropped about half that new value.)

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