People, is there now or will there ever be a fix for the "not responding" problem? I know that "conventional wisdom" says this isn't a Thunderbird problem, it's an anti-virus problem. But I'm having trouble wrapping my head around this. I've seen reports from people using three or four different anti-virus programs. Do they all have the same bug in them that blows up Thunderbird? Hard to believe. And why don't other email clients hang up when virus scanners are present? And since I'm using Norton and not MSE, telling me to use another anti-virus other than MSE and marking the problem "SOLVED" isn't any help. I used to have the problem occasionally when I was running Thunderbird on Vista and Win7. Now that I'm on Win10, it literally happens every half hour or so. Thunderbird on Vista and Win7 would recover fairly quickly. Thunderbird on Win10 takes several minutes. I like Thunderbird, I have Thunderbird set up the way I like, I'm used to Thunderbird. And in comparisons with other email clients, it appears that everyone else likes Thunderbird, too. But it's gotten to the point with me that Thunderbird is (almost) totally useless.