Comment 9 for bug 568154

Should add, I've successfully branched other from other lp branches recently -- May 15. Same AV running. (That branch was into a directory that had a shared repository. Not sure that was used, though, because the branch created a new .bzr inside the target directory, and the date on the shared repository didn't change. If, for some unknown reason, it didn't use the shared repository, then it was making a new repository, as was the command on which I got the error.)