Well, before advent of app store I NEVER had a case than I couldn't reinstall application that I've purchased. And with the app store, in just a year or so I a

Well, before advent of app store I NEVER had a case than I couldn't reinstall application that I've purchased. And with the app store, in just a year or so I already had a couple of cases when I lost access to an installer. One was that I lost iPhoto, with OS upgrade on Air. Another, temporarily, for around a week I had no access to XCode installer [because of some screw up in the store].