DragonFlyBSD 4.0 was released back in November with a variety of improvements while today the v4.0.2 point release is out to take care of some issues.

Perhaps most notable about DragonFlyBSD 4.0.2 is that it fixes a "major (pageable) memory leak" that can be easy to reproduce under certain conditions, as outlined by this commit. There's also been a variety of other fixes and kernel work since the earlier 4.0 debut.

This popular BSD operating system can be downloaded at DragonFlyBSD.org.