[imapproxy] imapproxy not used?

[Marco Zapletal]

hi guys

i am running imp and a courier imap-server on the same machine. now i 
have installed imapproxy to reduce the overhead.
but i think i had not set it up correctly, because in my maillogs I have 
these entries quite often

Aug  1 13:01:15 telis ImapProxy[3344]: Status: 0 temporary, 0 active, 0 
inactive, 0 other, 0 total.

Aug  1 13:41:40 telis ImapProxy[3609]: [DEBUG 3609] parent_conversate(): 
select() timed out. (60 seconds without activity)
Aug  1 13:42:40 telis ImapProxy[3609]: [DEBUG 3609] parent_conversate(): 
select() timed out. (60 seconds without activity)
Aug  1 13:42:40 telis ImapProxy[3609]: Status: 0 temporary, 0 active, 0 
inactive, 0 other, 0 total.

although imp is used during this time. below is my .imapproxy config 
file - did I make a mistake?

---------schnipp--------------------
# IP address of the IMAP server
remote_address 127.0.0.1
# listen to all interfaces
local_address  *
# port number of the IMAP server
remote_port  143
# port number IMP connects to on the proxy server (the port which 
imapproxy listens on)
local_port   1234
# accesslist :
accept          127.0.0.1
# debug and logging
debug   on
log_facility   LOG_MAIL
logging  on
# keepalive and timeout values
keepalive    60
client_timeout  60
server_timeout  1800
# interval between stats messages, in seconds
stats_frequency 60
# maximum number of times a record can be reused. 0 means no limit
max_reuse    5
------schnapp----------------------

thanks in advance for your help

marco