SMW 1.2.2 brings minor bugfixes
From semantic-mediawiki.org
Aug 27 2008. A minor update of Semantic MediaWiki, SMW 1.2.2, is now available for download. It mainly serves to fix a bug that occurred in rare cases when trying to undelete pages, but which was sufficiently annoying to justify a small release. If you do not encounter any undelete problems on your site, it is safe to defer the next SMW upgrade until the release of SMW 1.3, which is expected for Sep 8 2008. Installation of SMW 1.2.2 can be done by simply replacing all SMW files. Running scripts or updating other extensions is not required.