Comment #12 on issue 99 by otto.bretz: Memcached 1.4.2 server segmentation fault
http://code.google.com/p/memcached/issues/detail?id=99
Applying this fix and running it on my OpenBSD[1] server seems to cause deadlocks. A simple getMulti[2] using about 50 items causes the server to stall.
Without the patch everything seems to work fine (though it's not running with any real load).
[1] 4.8-current, memcached 1.4.5 package. [2] running the memcached php extension. libmemcached 0.44.