I'm using Thunderbird version: 128.5.1esr, Build ID: 20241202160748, under Linux Mint 22. My mail host is Pair Networks, and I collect my e-mail via POP3. The problem I'm seeing is that most of the attempts which Thunderbird should be making to collect mail are apparently not happening. I'm using the activity manager in Thunderbird to tell me when connection attempts occur. Firstly, the 'get messages' option, whether via the speed button OR the menus OR the hotkey combination, has no apparent effect. Secondly, the setting to check for new messages at startup was apparently disregarded. Thirdly, I decreased the interval for checking for new e-mails down to one minute. Again, the activity manager page remained blank. The check was either not happening, or wasn't being recorded. What DID happen is Thunderbird appeared to be doing a timed check for new e-mails every 4-5 minutes. So, I called the tech support at my mailhost and asked them to check their logs. They confirmed that they were only seeing attempts to connect every four or five minutes. I called the tech support at my ISP. I'm a lot less confident in them than I am in the tech support at my mailhost, but they insisted that they didn't do anything with my connection which could interfere with attempts to collect mail. Now, I don't really care about getting my e-mail every minute, BUT that 'get messages' option taking up to five minutes to take effect is a real nuisance in these days of two-factor authentication. I'm at a loss to think of anything else - I really can't believe that a version of Thunderbird has got out where all the above flaws are present. MY first question is whether anybody else is seeing anything like this? Of course, if anybody has any suggestions for a fix to the problem, I'd be grateful to hear that as well. I would have posted the troubleshooting information generated by Thunderbird, but there's 84KB of the stuff, so I'm hesitant to do so. Thanks for any info.