Согласной новастям на сайте уже давно есть новая стабильная версия:
Monday August 9th , 2004
Sysstat 5.0.6 released (stable version).
OK. There is yet another stable version of sysstat, which fixes the value of a
field displayed by sar -v that was wrongly calculated... See changelog for full
details. Next version should (hopefully) be sysstat 5.1.1 which is planned for
the end of october.

На мой взглад имеет смысл перейти на devel версию :

Sunday January 2nd, 2005
Sysstat 5.1.4 released (development version).
New stats have been added to sar : it can now collect and display NFS data of a
client or server box. Also a few bugs have been fixed in this release: See
changelog for details.