RPM of new version 0.44 of libmemcached the library to communicate with memcached servers is available in remi repository for Fedora ≥ 11. It's also available in rawhide repository.
As always: yum --enablerepo=remi install libmemcached This library is required by the new memcached PECL extension (an alternative to memcache) in active development phase. As this new version breaks ABI (with previous 0.43), I don't plan any update in the fedora ≤ 14 repository. In this new build, the client can use SASL. No RPM for EL or... Lire libmemcached-0.44