I installed the x86_64 version of FC4 Saturday and attempted to update using: yum -y update I get through the download of the headers and the RPMs, but during the actual update yum hangs, and cannot be aborted with control-C. I've tried twice and yum seems to hang in different places or it gets to the transaction check (after the package download) then stops with no messages. When the problem occurs, I cannot su, nor can I ssh in from another machine. The computer is not hung, ssh and su prompt for a password, but a shell prompt never appears. I tried updating yum, selinux and pam separately, and turning off selinux to no avail. I believe this to be the problem posted in: https://www.redhat.com/archives/fedora-list/2005-October/msg01035.html I did not see any responses or anything bugzilla. Any ideas? Bob...