I actually had a slightly different experience. My permalink structure was set to custom, which was certainly not intentional. I changed it to %month%/%name% and this finally updated the link. (No effect on switching themes.)
I guess it is just a little tricky to reliably force a flush in the links.
I agree with your suggestion in the ticket that /forum/user/admin would be preferable.
Nope, latest trunk in a test WP 3.1 install on my webserver.
/user/admin works directly in the bbp-twentyten theme, but the links on topics are still off of /blog/{/user/admin} for me.
Not working out for me just yet – deactivated/activated, Saved the on Permalinks panel, and started a new topic. The link in my gravatar or user name goes to /blog/user/$username/, which is picked up by the 404 handler.
Am I supposed to be linked to a different url structure?
