"The NetBSD Project is pleased to announce that version 5.1 of the NetBSD operating system is now available. NetBSD 5.1 is the first feature update of the NetBSD 5.0 release branch. It represents a selected subset of fixes deemed critical for security or stability reasons, as well as new features and enhancements. Please note that all fixes in security/critical updates are cumulative, so the latest update contains all such fixes since the corresponding minor release. Some highlights include: RAIDframe parity maps, which greatly improve parity rewrite times after unclean shutdown; X.Org updates; support for many more network devices; Xen PAE dom0 support; Xen PCI pass-through support."