Release notes from official site :
This is a maintenance release with some build fixes, doc fixes, and one new stat.
- Properly detect CPU alignment on ARM. bug100
- Remove 1MB assertion. bug 119
- More automake versions supported.
- Compiler warning fixes for OpenBSD.
- Potential buffer overflow in vperror
- Report errors opening pidfiles using vperror
- reclaimed : This stat reports the number of times an entry was stored using memory from an expired entry.
- sasl_pwdb : For more simple auth deployments
You can download it from : http://memcached.googlecode.com/files/memcached-1.4.5.tar.gz