During the first week of April. However, luckily for me, AFFX had a monster gap down the day I was going to short YHOO, so I watched AFFX and bought it and just sold today for a nice gain.
However, if it weren't for AFFX, I probably would've lost a couple pts on the Yahoo short.
This stock still boggles my mind at these levels. But I will not dare short it yet.... When it falls, it will fall hard though- hopefully we'll have gotten short by then, but that doesn't happen often...
Good luck!