Hallo, Stefan, Du meintest am 27.08.12: > ps02:/var/log/squid # tail -f -n 50 cache.log-20120823 > 2012/08/23 13:30:07| WARNING: HTTP header contains NULL characters > {Accept: */* Content-Type: application/x-www-form-urlencoded} > NULL [...] > {Accept: */* Content-Type: application/x-www-form-urlencoded} > NULL > {Accept: */* > Content-Type: application/x-www-form-urlencoded > 2012-08-23 13:30:07 [14636] ending emergency mode, stdin empty > 2012-08-23 13:30:07 [14637] ending emergency mode, stdin empty > 2012-08-23 13:30:07 [14638] ending emergency mode, stdin empty > 2012-08-23 13:30:07 [14640] squidGuard stopped (1345721407.666) > 2012-08-23 13:30:07 [14639] squidGuard stopped (1345721407.666) Is there any line before 13:30:07 which shows more information? Viele Gruesse! Helmut