just switchded to 03/26. did a full wipe/install this time (had been just flashing the new build over the old for a long time, since around feb 5th i think).
the same thing happened last time I did a full/wipe install...
the market would not download anything... tried force stopping the market and clearing cache, and restarting. didn't work.
had to do this again...
xda-developers - View Single Post - [ROM] aospCMod | AOSP 2.3.3 / CM7 (Gingerbread) [03/26/2011]
which was the solution last time, and it worked again.
(of course these darn cables get such poopy loose connections over time, that you have to hold your mouth just right to get a good data connection to the pc and run a shell. I'm on my third cable from the local sprint store. i don't think i'm rough them, the strain relief design just blows. anyhoo, off the soap box now

)