Ok so this happened with me when I had iMovie '08 also but I tried looking it up but couldn't find any answers so here goes, I'm currently running iMovie '09 on my Powerbook G4 and everything is running fine except the export to MobileMe gallery. When ever I create a movie and click the publish to MobileMe, it checks with MobileMe for a second then takes me to a sign-in or try free for 60 days even though I am signed-in in system preferences. Even when I logout and log back in the sys. prefs. it still doesn't recognize that I am logged in to MobileMe. I'm thinking that when It "checks with MobileMe", it detects I am running on the "non supported" G4 processor and won't let me proceed to upload. Has anyone else experienced this with iMovie '08/'09 on a G4 or non-supported processor/computer?