SPSS does not support the use of any existing version of SPSS for Mac OS X on the new Intel®-based Mac hardware, including SPSS 11.x or 13.0. The use of the Rosetta emulation software interferes with the numerical calculations in SPSS. We therefore are unable to support any version of SPSS on Intel-based Macintosh machines.
http://www.spss.com/spss_mac/system_req.htm
/Peter
