The most common popup I see on my computer is this one:
I use Mozilla Thunderbird for email, and whenever I have a lot of mail, I get this stupid, pointless, useless, unhelpful, needless, infuriating popup every five seconds or so while the mail comes in. It stops doing everything, including talking to the mail server, while it waits for me to hit ok. This means if I walk away the connection to the mail server will be lost.
So, I have to babysit the program while it checks my email by clicking on this popup over and over until I get all my mail.
I’ve been using Mozilla for about three years, and it has always had this “feature”. I have the latest version, and still nobody has gotten around to fixing this. I have no idea what the popup means. I have three email accounts, but each one has its own inbox and there is no reason they should interfere with each other.
It’s almost annoying enough to make me think of using Outlook again. Good greif.