Hi I have thunderbird on several laptops in different countries for many years. They all sync well save one. When I create a new sub folder in one laptop the others do the same when I start them. Emails I file in different sub folders the same. etc etc etc But on one laptop this does not happen. Everytime I use it it downloads all the email, but not the latest sub folders, emails filed etc etc. so I have to dit manually, which takes hours, plus I have to try and remember where I filed hundreds of messages so al are the same and easy to use. Any ideas how I fix this problem on the one laptop? All the laptops are the same, brand, model, operating system etc etc