First things first: The Missing Link! [debian.org]
Dmitry Bogatov (maintainer for several Debian packages [debian.org] and a TOR exit node [theregister.co.uk]) was arrested in Moscow, accused of endorsing violence and mayhem. The Debian project reacted by - besides giving their moral support - revoking access rights based on his private key as a precaution, in case the key gets compromised.