Have you all checked out the Tech Preview of WSE (3.0):

http://www.microsoft.com/downloads/details.aspx?FamilyId=7591DFD2-E1B7-4624-9D5B-29C211D149FE&displaylang=en

So I thought it would be interesting to have feedback from you all on your experiences of using WSE, good and bad.

What are your thoughts on WSE...have you implemented WS-Security successfully...what challenges have you faced trying to implement WS-Security...

Look forward to hearing from you!