Hallo, Ralf, Du meintest am 10.02.12: >> my self made squid 3.2.0.14 sometimes produces messages like >> Jan 30 08:56:58 Arktur squid[4263]: Failed to select source for >> 'http://ivwbox.de/' > ivwbox.de does not resolve. Maybe that's normal? I may not believe it. I never had these messages with older squid versions. This message appeared not only with "ivwbox.de" but also p.e. with "google.com". About 5 to 10 messages within 1 minute, and then a long pause (long = more than 30 minutes ...) I've just re-installed an older version - my colleague doesn't like restarting "squid" hourly ... (I don't know if that's related to "Failed to select" ...) Viele Gruesse! Helmut