Hi, I've just (re)discovered the -dn option.... It was a simple problem of missing files (why there is no clear messages in the logs ??? Mystery). 2013/04/03 18:17:22| Starting Squid Cache version 3.1.23 for i486-pc-linux-gnu... 2013/04/03 18:17:22| Process ID 5608 2013/04/03 18:17:22| With 1024 file descriptors available 2013/04/03 18:17:22| Initializing IP Cache... 2013/04/03 18:17:22| DNS Socket created at [::], FD 7 2013/04/03 18:17:22| DNS Socket created at 0.0.0.0, FD 8 2013/04/03 18:17:22| Adding nameserver from /etc/resolv.conf 2013/04/03 18:17:22| Adding nameserver from /etc/resolv.conf 2013/04/03 18:17:22| Adding nameserver from /etc/resolv.conf 2013/04/03 18:17:22| Adding domain .intra from /etc/resolv.conf 2013/04/03 18:17:22| helperOpenServers: Starting 8/8 'ntlm_auth' processes 2013/04/03 18:17:22| helperOpenServers: Starting 5/5 'wbinfo_group.pl' processes 2013/04/03 18:17:22| errorpage.cc(293) errorTryLoadText: '/var/hera/squiderrors/ERR_SECURE_CONNECT_FAIL': (2) No such file or directory 2013/04/03 18:17:22| errorpage.cc(293) errorTryLoadText: '/var/hera/squiderrors/ERR_PRECONDITION_FAILED': (2) No such file or directory 2013/04/03 18:17:22| errorpage.cc(293) errorTryLoadText: '/usr/share/squid3/errors/templates/ERR_PRECONDITION_FAILED': (2) No such file or directory 2013/04/03 18:22:41| errorpage.cc(293) errorTryLoadText: '/var/hera/squiderrors/ERR_ESI': (2) No such file or directory 2013/04/03 18:22:41| errorpage.cc(293) errorTryLoadText: '/var/hera/squiderrors/ERR_ICAP_FAILURE': (2) No such file or directory 2013/04/03 18:22:41| errorpage.cc(293) errorTryLoadText: '/var/hera/squiderrors/ERR_UNSUP_HTTPVERSION': (2) No such file or directory 2013/04/03 18:22:41| errorpage.cc(293) errorTryLoadText: '/var/hera/squiderrors/ERR_GATEWAY_FAILURE': (2) No such file or directory 2013/04/03 18:22:41| errorpage.cc(293) errorTryLoadText: '/usr/share/squid3/errors/templates/ERR_GATEWAY_FAILURE': (2) No such file or directory FATAL: failed to find or read error text file. It's OK now, thanks for help ! Unfortunatly, 3.1.23 do not help for bugs we have (like on http://entreprises.edf.com, where with squid nothing will display). Now, I will try 3.3. Lot of change have to be made in my squid.conf. Managed to have a build OK, but with my squid.conf, it do not work at all with dansguardian and ntlm_auth. JV -----Message d'origine----- De : babajaga [mailto:augustus_meyer@xxxxxxxx] Envoyé : mercredi 3 avril 2013 15:14 À : squid-users@xxxxxxxxxxxxxxx Objet : RE: Upgrading SQUID from 3.1.6 to 3.1.23 - not working- Then my next guess is a problem regarding access rights. (I hate this stuff since the time, it was invented on DEC/VMS) I would try to give 777 to all files/dirs, which are used by squid. OR (not so brutal) start squid with full debug using squid -X -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Upgrading-SQUID-from-3-1-6-to-3-1-23-tp4659259p4659345.html Sent from the Squid - Users mailing list archive at Nabble.com.