Steps for reproduce problem:

• open screen Administration -> Audit;
• select Actions;
• open Filter and select Recipient;
• press [Filter] button

• ociexecute() [<a href='function.ociexecute'>function.ociexecute</a>]: ORA-00918: column ambiguously defined[/home/sasha/public_html/trunk/include/db.inc.php:500]
• SQL error [ORA-00918: column ambiguously defined] in [SELECT * FROM (SELECT a.*,a.userid FROM alerts a WHERE round(a.alertid/100000000000000) in (0) AND (a.userid IN (1)) AND a.alerttype=0 AND a.clock>1257870600 ORDER BY a.clock DESC) WHERE rownum BETWEEN 0 AND 1001]
• ocierror() expects parameter 1 to be resource, boolean given[/home/sasha/public_html/trunk/include/db.inc.php:419]
• SQL error [] in []
• ocifetchinto() expects parameter 1 to be resource, boolean given[/home/sasha/public_html/trunk/include/db.inc.php:550]