The logcheck rule for ntpdate also does not match any longer (at least for version ntpdate 1:4.2.0a+stable-2, delivered with sarge).
logcheck rule in /etc/logcheck/ignore.d.server/ntpdate: ntpdate\[[0-9]+\]: adjust time server .* offset ntpdate log message: Jul 4 18:58:07 c2 ntpdate[23667]: step time server 129.132.2.21 offset 1.371264 sec -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]