I was using App World earlier today, but just reloaded my OS and tried to add all my apps again, but like you, am having no luck with App World. It just says APPNAME is not available for download from app world... for every app I try. I guess its just a problem thats happening right.... now.
Ok, good, so other people on different BlackBerry devices on other carriers are having the same issues. I'm just glad it's not the new OS I just loaded on my Bold.