Last year I complained that Cubase SX for Mac was very buggy. Since then, Steinberg has released several patches. As of this writing, Cubase SX is up to version 2.2.0 "b35". This FTP site is recommended instead of their web site, which sent me to a registration page that had nothing to do with Cubase when I clicked on the SX link. Get both "Cubase_SX_220" and "Cubase_SX_220b35" if you're upgrading from the 2.0 retail version from last year.