[Mediawiki-l] Timestamp problem on MediaWiki 1.4beta3

[admin at goobergunch.net]

I recently installed MediaWiki 1.4beta3 on the NSwiki
(http://ns.goobergunch.net/wiki/index.php).  This was an upgrade from
MediaWiki 1.3.9.  Although I'm overall quite pleased with the upgrade, I
have noticed that the ~~~~~ code used to give timestamps is not working
properly; instead, it is returning one's signature and timestamp followed
by a tilde (example: Rechze • (talk) 12:35, 28 Dec 2004 (GMT)~).  How do I
remedy this?

Thanks,
Goobergunch