Upgraded Squirrelmail from 1.4.2-r3 to 1.4.3_rc1 as per GLSA 200405-16
http://security.gentoo.org/glsa/glsa-200405-16.xml
Something went wrong this morning, possibly related to imap.
Couldn't get connection via ssh so DediPower (stars that they are) have rebooted the box. Everything appears okay now.