Hi Henrik, Thanks for answer. Your method doesn't help... I do not restrict my customers anywhere on the network. Traffic increases after I shift traffic through squid. >From router to Squid: 30 second input rate 1980000 bits/sec, 399 packets/sec >From Squid to router: 30 second output rate 2164000 bits/sec, 381 packets/sec No wccp, no gre is used (if it could be headers...) --- Alexey Kovrizhnykh Senior IT manager Adress: #173, St. 215 (Jawaharlal Nehru), Sangkat Phsar Doeum Kor, Khan Tuol Kork, Phnom Penh, Kingdom of Cambodia. Mobile number: + (855) 98 713 013 Fixed Telephone number.: + (855) 98 202 401; 23 888898 Fax number : + (855) 98 202 098 Website: www.star-cell.net Sunday, November 30, 2008, 9:26:28 PM, you wrote: > fre 2008-11-28 klockan 17:52 +0700 skrev Alexey Kovrizhnykh: >> Question: How to make Squid not to download a new part of file > "unless the old part is already loaded by the user? > Squid only buffers a small amount (16KB) plus the TCP window buffering > done by the OS. > It's hard to say exactly what is your problem without looking into the > details of the traffic you see. As others already mentioned it may be as > simple as incorrect quick_abort or range_offset_limit settings, or even > some bug in the very old version of Squid you are using. > Try the following: > quick_abort_min 0 KB > quick_abort_max 0 KB > range_offset_limit 0 KB > Regards > Henrik