While I plan on purchasing SL on Friday, and really can't wait, I think Apple may get slammed because, IMO, it has not warned folks that if they have PPC versions of programs on their systems now, they will not run under SL unless you download Rosetta. I went into System Profiler-->Applications and looked at all of the apps that were PPC apps. Most I don't use anymore and dumped, but some required updating (like my Citrix Client). It's a good idea to get the Intel or Universal versions now, before you updgrade to SL. I think there will be a lot of pissed off users who did not get their ducks in a row, only to find that there may not be Intel/Universal versions of their programs.