Ubuntu PSA
https://twitter.com/#!/ubuntustatus/status/75541657638014976
PAM security update for Hardy, Lucid, Maverick, and Natty breaks cron (http://pad.lv/790538). Mirroring/downloads blocked; fix in progress
UPDATE:
https://twitter.com/#!/ubuntustatus/status/75619130614624256
Fixed PAM binaries for http://pad.lv/790538 are now available from the security archive, and will be on other mirrors soon.
PAM security update for Hardy, Lucid, Maverick, and Natty breaks cron (http://pad.lv/790538). Mirroring/downloads blocked; fix in progress
UPDATE:
https://twitter.com/#!/ubuntustatus/status/75619130614624256
Fixed PAM binaries for http://pad.lv/790538 are now available from the security archive, and will be on other mirrors soon.