Comment 2 for bug 1046340

The change appears to have been made by Debian in 1:4.2.6+dfsg-1. The corresponding Debian bug is http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=498992

Looking at the bug and at the changelog entry ("Remove ntp.logcheck.ignore.server, none of those messages are send to syslog now."), I get the impression that the intention was that this file was presumed not needed because ntpd isn't supposed to log messages to syslog any more.

Is there something on Ubuntu that makes ntpd behave differently? Is this due to our use of rsyslog? Or does this bug also affect Debian now due to some change in logging in Debian since then?