Thread:NoWayThisUsernameIsAlreadyOwnedBySomeone/@comment-24335865-20150613194744/@comment-26143371-20150730155424

Did this happen for the first time today? Might be that it has never been working for me as there are some more issues with my profile.

There has been a similar issue which started either today or yesterday (w:User_blog:DaNASCAT/Technical_Update:_July_29,_2015), so it is possibly related. You should leave your comment there along with an example link.