Gavin Andresen has changed the Bitcoin code to block any output with a value of less than 54uBTC:
It's true, last payment less than 54 uBTC was on 12th June

What if someone send me less than 54 uBTC?

He didn't "block any output with a value of less than 54uBTC"... he set the default value that nodes block to 54 uBTC.