http://netbsd.i2p/releases/formal-3/NetBSD-3.0.2.html
This represents a selected subset of fixes deemed critical
in nature for stability or security reasons. All fixes in security/critical updates (ie, NetBSD 3.0.1, 3.0.2, etc) are
cumulative, so this latest update contains all such fixes since the NetBSD
3.0 release. These fixes also appear in the 3.1 release and future releases
(ie, NetBSD 3.2, 4.0, etc), together with other less-critical fixes and
feature enhancements.