hi, I'm sorry I can't post the logs, here's my resume: with squid.conf: request_body_max_size 0 KB I get a small file (~ 1596 Byte) uploaded But a bigger file (~ 665879 Byte) gives a Error: Document is empty ->In access.log: ... POST 502 ... --ok, then with squid.conf: request_body_max_size 1 KB with a small file (~ 1596 Byte) and with a bigger file (~ 665879 Byte) I get a Error: Filesize too large when I set the request_body_max_size 2048 KB I get the same behaviour as request_body_max_size 0 KB ... I have no Idea why, and, this happens independent from the server I'm trying to put my upload Thanks, any help apreceated and forgive me for my bad english Bernd