Is the word 'about' a reserved keyword for Search in Oracle UCM.

We are using Oracle UCM 10g3 and whenever we search for word 'about', we get the below error.

Error:

Content Server Request FailedUnable to retrieve search results. Unable to retrieve search results. Unable to create result set for query 'SELECT IdcColl2.dID, dDocName, dDocTitle, dDocType, dRevisionID, dSecurityGroup, dDocAuthor, dDocAccount, dRevLabel, dFormat, dOriginalName, dExtension, dWebExtension, dInDate, dOutDate, dCreateDate, dPublishType, dRendition1, dRendition2, VaultFileSize, WebFileSize, URL, dFullTextFormat, dFullTextCharset, DocMeta.*
FROM IdcColl2, DocMeta
WHERE IdcColl2.dID=DocMeta.dID AND ((((((((UPPER(dDocName) LIKE UPPER('%about%') AND dDocName IS NOT NULL) OR (UPPER(dDocTitle) LIKE UPPER('%about%') AND dDocTitle IS NOT NULL) OR (CONTAINS(dDocFullText,'about') > 0 ) ))))))) ORDER BY dInDate Desc'. ORA-20000: Oracle Text error: