We've updated the AustinTowers Downtown Condo Market Index for March and the news is not good. While month-by-month results fluctuate wildly, March saw a drop of 71% in the number of units sold -- from 14 units last March to just 4 this March. For the first quarter of 2009, sales dropped from 25 units sold in 2008 to 14 units sold in 2009.Needless to say, March of 2008 was a very strong month. Amazingly enough, it wasn't a new project that drove last year . . .