OK I can see the protocol:
Where PM recognizes th pword, asks if there are any messages, gets reply (jn this instance OK 2), RETRieves 1, DELEtes 1, RETR 2, DELEtes 2 then
17:14:45.107 >> 0005 +OK\0D\0A
17:14:45.107 << 0006 QUIT\0D\0A
17:14:45.169 >> 0040 +OK rongaddis POP3 server signing off.\0D\0A
17:14:45.169 --- Connection closed normally at Wed, 04 May 2011 17:14:45. ---\0A\0A
But I stayed in the program and clicked on the Send/Receive icon three more times before exiting the program...all of which says to me that there were no more internet actions after the initial mail download.