[HELP] Continuous messages in logs

I have a fairly simple installation:

Trixbox 1.1
Digium Te110p connected to a PRI
30 SIP extensions - all within the same network.

My log file has several hundred of these messages every second:

WARNING[8312] chan_sip.c: Failed to accept SIP TCP connection from TCP listening sock -1 : Bad file descriptor


DEBUG[26127] channel.c: Nobody there, continuing…

Everything seems to be working fine. Any idea what I can do to get rid of these messages? Is there really something going wrong here?