Hi I just tried upgrading our 3.1.0.15 TPROXY servers to 3.1.0.16 I receive this error when trying to start squid : 2010/02/03 14:42:08| FATAL: http(s)_port: TPROXY support in the system does not work. FATAL: Bungled squid.conf line 45: http_port 8081 tproxy Squid Cache (Version 3.1.0.16): Terminated abnormally. CPU Usage: 0.008 seconds = 0.008 user + 0.000 sys Maximum Resident Size: 0 KB Page faults with physical i/o: 0 If I go back and "make install" the previous 3.1.0.15 version it starts fine My system is Debian 5.0.4, with TPROXY custom compiled 2.6.31 kernel Michael.