Lock this, Batman

Stefan links to a post by Sean which references a post by Gordon Luk:

"...that people trying to work around this problem with complex WS algorithms are certainly expending a lot of time and effort chasing an impractical goal."

. I agree 100% with Stefan:

I don’t think anyone ever really believed that this would be feasible on the Internet. I don’t think the folks who came up with the relevant WS-* specs ever did.

Exactly, that's why we have WS-RM and WS-BA.