I have had issues since installing Leopard. And yes I should have waited, researched, and waited some more. But alas, too late. I have uninstalled all old aps that are acting odd and reinstalled. Each time I fix one ap, another goes hinky. I will not upgrade again without someone else suffering the slings and arrows of wanting the latest and greatest Mac offers. Patience is a virtue. Tonight I will clean out old Compressor files and reinstall. Good luck to you.