Need Latest (11.6) Secure Web Gateway iApp

Thanks, works like a charm :) Question : there may be something missing : it seems like the user authenticated to the proxy is cached somewhere. I recreated the iApp multiple times, flushed the IE cache on the test stations, force deleted any remaining connections, deleted APM sessions. Even days after, user is still authenticated and never prompts again for user/password, like the 407 is already filled in. Any clue ? I am using Local DB authentication on a 11.6.0 HF3 VE.