I just downloaded Y!Go and find the email won't delete messages. They show deleted on my Blackberry within the Y!Go interface, but the next time I launch Y!Go they're all still there. Sure enough, when I logged into my Yahoo account from my computer, there they all are. I had this problem a while back and deleted the app from my Blackberry, figuring when they ironed out bugs like this I'd try again. Several months later and no progress. This is a great concept for an app, rolling up a bunch of services in one interface. Unfortunately their execution still sucks.