OpenBSD 4.2 review
As usual, OpenBSD 4.2 offers a large collection of intelligent changes to an already great operating environment.
The BSDs in general have a common reputation for high code quality and poor hardware support. In OpenBSD's case, the code is definitely high quality. Nothing in the default installation is half-implemented, or committed on an experimental basis. If full functionality is not yet possible for hardware drivers, basic functionality is achieved and thoroughly tested; this forms the basis for further driver development.
Hardware support is a sensitive area for the OpenBSD developers. Since they won't allow any proprietary code in the base system, and since manufacturers are frequently reluctant to give out hardware documentation, the development team is notorious for creating their own drivers through reverse-engineering.