Forums will be making significant UX changes to address key usability improvements surrounding search, discoverability and navigation.
To learn more about these changes please visit the announcement which can be found
Notice the difference between the old and new login page:
- CRM4 + IFD login page
-> you can start straight away with typing your username
-> you only need to enter your username
- CRM2011 + ADFS
-> you need to click on the username first
-> you need to enter 'domainname\username'
Modify these routines in FormsSignIn.aspx.cs (change domainname to your domain), located in C:\inetpub\adfs\ls (make a copy of the file first):