So, I basically just want to rant about how much I hate websense.
I had a nice setup here at my office:
2 Linux Boxes running SQUID, one for the Standard Proxy and one for the Admin Proxy (used for caching and webfiltering).
Of course, corporate wanted a more streamlined setup so they pushed websense appliances to all branch offices. I created the WPAD file and deployed via DHCP. About 3/4's of the users transitioned without issue, but the other 1/4 were being prompted for credentials by the websense appliance when going out to the internet. I had to create a script to resolve the issue. It runs a program that sends the username/IP to Websense when the user logs on. This 2nd layer of authentication seems to have resolved the issue with websense not recognizing certain users. I was ready to pull my hair out!!!

So what are the TE forum members running for webfiltering?