After the release of Unicode 5.1, there is two different encoding possible for some Malayalam Characters. Request Database switching to Unicode 5.1 as everything to be converted to the Unicode 5.1 version,
including page titles, namespaces and article content, and need a script for Unicode 5.0 characters sent by browsers during editing and searching to be converted to Unicode 5.1 before go to storage.
Please check http://www.gossamer-threads.com/lists/wiki/wikitech/184440 and http://unicode.org/versions/Unicode5.1.0/#Malayalam_Chillu_Characters also
Community Consensus: http://ml.wikipedia.org/wiki/WP:Panchayath_(Technical)/Unicode_5.1.0
Version: unspecified
Severity: critical