[Linphone-users] Question about error message

[zed]

Greetings.
I just tried using linphone for the first time, and it seems to work. 
However, in the program window it says the following in the bottom line:

Registration on sip:sip.linphone.org failed: io error

What does this mean? It seemed to work to register my account and I 
logged in successfully, so I don't know why this message comes up. Any 
ideas?