SPSS V11 and V13 not compatable with Intel Macs

SPSS does not support the use of any existing version of SPSS for Mac OS
X on the new Intel®-based Mac hardware. Some of the procedures result in
incorrect numerical calculations under the Rosetta emulation software,
rendering the results invalid. SPSS 13.0 for Mac OS X will prevent
installation onto Intel-based hardware.
The Intel-compatible version of SPSS for Mac OS X SPSS 15.0 for Mac OS X
will be released in the second quarter of 2007.