I'm having an extremely weird issue with the Mac App Store, and so far the Apple person that has been emailing me via Support Page has been useless. I bought Angry Birds months ago. I login a week or so ago and see there's a new update (1.5.1) and i click "Update" and get an error telling me i have to login to the account firstname.lastname@example.org to get updates for this account. This is not my account, i've never seen this email, and i have no idea why i get this error. The Apple CSR has already verified that i DID purchase this on my account, yet it won't let me download the update. So i said forget it and deleted the app. I still have a notification badge showing i have an update. So i can't download the update OR get rid of the badge. To top it off, when i search Angry Birds it says "Install" instead of "Buy" to further verify i have bought the application. So i thought, fine. Click Install.. and i get "Unknown Error", click "OK" on it, then get "We could not complete your request. There was an error in the App Store. Please try again later (4)" Any ideas to get: A) My update to work B) Get the badge off my Dock icon Thanks in advance.