I just tryed my antminers u1 (the 2 of them) on my windows 7 pc... 1,54gh/s the piece.
So that worked.

Back on my apple... bitminter beta.. nope.

Astroid is getting 159 to 182gh/s out of them, noticed even 2,27gh/s when one was in and putting the other in the windows to try.

So the beta is good.