Hello, I'm in trouble now. I just implemented Squid 2.6.STABLE21 on CentOS 5.6 with LDAP authentication on MS AD. Everything works fine except one thing is when users entered blocked website (such as facebook), they got login prompt keep asking for their username and password. I tried to block facebook but facebook has a lot of plugin which can be put on any website (such as like button) and those keep asking user to enter their username and password which is very annoy. Please help me sort this out. Thank you. Mo