Error Message from my proxy server

Hi, all

I found a lot of same messages in my new proxy server:

ftp-child [1097] <07/25-10:06:07> TECH-ERR can't get num of bytes: Cli-Ctrl
0=156.146.109.250

Where the IP address is the client connects to the proxy server to ftp in
and out of Internet through this ftp proxy server. The message repeats every
minute in the log file while the proxy server seems working fine. We run the
proxy server on Sun Blade 100, Solaris 9 and TCP Wrapper and chroot
functions of proxy server are enabled. Does anyone know whether I can ignore
this message or something is wrong? Thanks in advance.

Ryan Jiang
Senior UNIX administrator
Liz Claiborne, Inc.
(201) 295-7171