Hi, thanks for the responses. I looked into the strange behavior a little bit more in detail and noticed, that only pdf-files are concerned. All other files, also greater than 50k, are cached, only pdfs are not cached. In the squid.conf I have: refresh_pattern ^ftp: 43200 0% 43200 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i \.(gif|png|jpg|jpeg|ico)$ 43200 0% 43200 override-expire ignore-no-cache ignore-no-store ignore-private refresh_pattern -i \.(iso|avi|wav|mp3|mp4|mpeg|swf|flv|x-flv)$ 43200 0% 43200 override-expire ignore-no-cache ignore-no-store ignore-private refresh_pattern -i \.(deb|rpm|exe|zip|tar|tgz|ram|rar|bin|ppt|doc|pdf|tiff)$ 43200 0% 43200 override-expire ignore-no-cache ignore-no-store ignore-private refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern (Release|Packages(.gz)*)$ 0 20% 2880 refresh_pattern . 0 20% 4320 In the access-log I found: 1400221694.741 889 192.168.0.232 TCP_MISS_ABORTED/200 8704 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221696.022 1167 192.168.0.232 TCP_MISS/206 26089 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221696.655 624 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221697.345 687 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221697.807 1146 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221698.643 833 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221700.545 2684 192.168.0.232 TCP_MISS/206 197037 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221701.731 1182 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221702.529 1922 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221703.538 1006 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221704.170 622 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221705.030 857 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221706.319 1283 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221707.155 833 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221708.020 863 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221715.392 386 192.168.0.232 TCP_MISS_ABORTED/206 10145 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221716.368 870 192.168.0.232 TCP_MISS/206 26089 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221717.561 1168 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221718.848 1283 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221720.008 2441 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221721.082 1069 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221723.787 3725 192.168.0.232 TCP_MISS/206 197037 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221727.264 3474 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221727.635 3789 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221729.404 1304 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221730.828 1418 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221731.916 1084 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221733.161 1243 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221734.491 1326 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf 1400221735.529 1035 192.168.0.232 TCP_MISS/206 65969 GET http://forfix.de/test/1.pdf - HIER_DIRECT/85.214.232.151 application/pdf If I rename the file 1.pdf in 1.exe, it would work. Best regards Joachim > On 15/05/2014 11:17 a.m., Dan Charlesworth wrote: >> I think there was a bug fixed very recently to do with the fact that >> `maximum_object_size` is ignored if it comes after `cache_dir` in the >> conf. >> >> If you switch the order or move use `cache_dir max-size=n` then it >> should be alright. >> >> On 15 May 2014 04:18, Joachim Rahm wrote: >>> Hi, >>> >>> I installed a squid on an ubuntu 14 server. >>> In the access.log I get for files greater than about 50KB the error >>> code >>> TCP_MISS_ABORTED and the files are not cached. > > > MISS is server being contacted for data. > ABRTED is the client giving up before the response happens. > > Given that responses under 50KB happen: > * Look to your network for TCP "window scaling" issues. > * look for PMTUd issues (somebody blocking ICMP usually). > > Amos >