Trailrunner7 writes "There's a remote vulnerability in the Kerberos implementation in several versions of Ubuntu, which could allow an attacker to cause a denial-of-service on vulnerable servers. The bug is in Ubuntu 8.04, Ubuntu 9.10, Ubuntu 10.04 and Ubuntu 10.10. The bug is in the Ubuntu implementation of the Kerberos authentication protocol. Ubuntu has released a slew of new packages to fix the flaw. The group said that in most cases, a normal system update will add the new fixes."