It's not a question of avoiding updates altogether, but the sad reality that it always seems to choose the most inconvenient and/or expensive time to do it. If

It's not a question of avoiding updates altogether, but the sad reality that it always seems to choose the most inconvenient and/or expensive time to do it. If they'd just do as Thunderbird does -- notify me that there's an update and ask me what action I'd like to take -- there'd be no problem. As it is, being unable to choose when the update happens is unacceptable. FWIW I've tried every documented setting, "enterprise" policies, etc. to prevent automatic updates in FF, but nothing seems to stick.