[Evolution] POP3 stopped working after upgrade to 3.0

[Daye Liu <rosemont gmail com>]

After upgrading to 3.0 (when Fedora upgraded from F14 to F15), Evolution
seems to have a break down with varies symptoms.  Most severe one is
that it stopped receiving POP3 email once opened.

It still checks and received POP3 email when started the first time.
But then when click on the the 'Send/Receive' button, or at scheduled
receiving time, the pop-up window flashes by, but nothing is actually
received ever since.  If close the application and reopen it, then it
can check and receive for once.

This was not observed before.