I know that. It's a minor bug. These options should be grayed out from the very beginning. Follow steps I wrote and you'll see. IMHO a better solution would be to remove them completely from that dialog or add some info like "your firefox is updated by Ubuntu repository"
I know that. It's a minor bug. These options should be grayed out from the very beginning. Follow steps I wrote and you'll see. IMHO a better solution would be to remove them completely from that dialog or add some info like "your firefox is updated by Ubuntu repository"