Hi, I have a file that stores reular expressions to block a set of URLs that end a certain way. all the urls except that end with the .m3u extension is blocked. Yes I restarted squid after changing the configuration file. Could some one help me sort the issue? I checked with http://www.2600.com/wbai/wbai.m3u but it is not blocked. My acl in squid.conf is acl media-url-regex url_regex -i "/etc/squid/acls/media-url-regex" http_access deny media-url-regex the content of the file "/etc/squid/acls/media-url-regex" is given below. It seems strange that I can block al others except .m3u # pwd /etc/squid/acls # cat media-url-regex \.mp3$ \.mp4$ \.asx$ \.wma$ \.wmv$ \.avi$ \.mpeg$ \.mpg$ \.qt$ \.ram$ \.rm$ \.iso$ \.wav$ \.wmf$ \.exe$ \.zip$ \.gz$ \.rar$ \.bzip$ \.bzip2$ \.dll$ \.midi$ \.cda$ \.csv$ \.pls$ \.mov$ \.qtl$ \.m3u$ # Thankyou so much KInd regards Siju