Not receiving incoming messages after update

I just installed version 2.8.7 and have not been able to receive incoming messages. I’m using Lion 10.7.1 on a MacBook Pro, 2.8 GHz Intel Core i7 with 8 GB 1067 MHz DDR3.

Which mail program? Also, please clarify what you mean about not receiving messages. What, specifically, is happening?

Tim contacted me via e-mail to report that he’s now receiving messages.