The plugin is great. I just installed it and it works mostly fine. I am not sure if it is just me. I have one small issue. When a user click “log in”, and the log in page shows with a “Invalid username or incorrect password” error message. At this moment, the user has not entered anything yet. After correct AD credential is entered, all just work. The version I use is 0.9.5 with WordPress 2.8.1, php 5.3.0 and iis 7 on Windows 2008. Any idea on this issue? Thanks.