if you are upgrading svn then you need to do an additional step after you do a svn up or svn checkout cd to the anope directory and do a make distclean then run ./Config, make and make install. If the module source code hadn't changed then to it doesn't get re-compiled against the newer version and make distclean deletes all the moules from the compile directory and starts over from scratch. meaining all the modules get re-compiled. which gives you a much cleaner installation.