I'm a long-time user of T-bird. Current version 102.9.1(32 bit). About 2 months ago T-bird stopped bringing in all the e-mails from my local provider (kos.net). The account is set up as an I-map account. Some emails came into the inbox, but not others. To see them I had to go to my server's webmail, and they were all there. To me it appears rather random. At the same time, T-bird disappeared a lot (but not all) of the emails that I had moved to various local folders. I have a very complex setup of local folders. I just recently discovered the 'file repair' function under properties, so I tried it on the main inbox and on various local folders. Presto, all the emails were now displayed in T-bird. Alas, as soon as I left the folder I had repaired, and then came back to it, the emails were disappeared again. I don't believe I have broken through any file size numbers that may affect T-bird. I am not a geek, and don't know where to turn next. Any suggestions?