AS2005 Cube Processing Via SSIS 2005 and SQL Server Agent

Microsoft has confirmed the processing of AS2005 cubes from SSIS 2005 invoked from SQL Server Agent defaults to serial/sequential processing, irrespective of whether the parallel processing option has been selected.  This results in increased cube processing times (possibly up to 4 times longer) when compared with using XMLA scripted tasks from SQL Server Agent.

Microsoft has reproduced the problem and has escalated it to the SSIS Product Team.