User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.1.5) Gecko/20091109 Ubuntu/9.10 (karmic) Firefox/3.5.5 Build Identifier: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.9.1.5) Gecko/20091130 Thunderbird/3.0 It seems to not be possible to use a trash folder as a subfolder of the inbox (INBOX.Trash). Reproducible: Always Steps to Reproduce: 1. Create a subfolder "Trash" in your IMAP inbox 2. Set your trash folder to that newly created folder 3. Restart thunderbird Actual Results: There is a second "Posteingang" (german for Inbox) with a subfolder Trash created Expected Results: Use this folder for Trash or at least throw an error that this configuration is not working.

Could you please attach IMAP log for you problem. > https://wiki.mozilla.org/MailNews:Logging

> 4 lsub "" "*" > * LSUB () "." "Mailinglisten" > * LSUB () "." "INBOX" > * LSUB () "." "Spam" > * LSUB () "." "Trash" > * LSUB () "." "Mailinglisten.Bugtraq" > * LSUB () "." "Mailinglisten.Calvin" > * LSUB () "." "Mailinglisten.Argyll" > * LSUB () "." "INBOX.Drafts" > * LSUB () "." "INBOX.Sent" > * LSUB () "." "INBOX.Papierkorb" > 4 OK Lsub completed. > 1. Create a subfolder "Trash" in your IMAP inbox No Trash under Inbox. Papierkorb(real folder name, not translation of Trash by Tb) under Inbox instead. > 2. Set your trash folder to that newly created folder How did you set it? Select the Inbox.Papierkorb via UI? Set via config editor? Or put it in prefs.js manually? > 6 list "" "Posteingang/Papierkorb" > 6 OK List completed. > 7 create "Posteingang.Papierkorb" > 7 OK Create completed. > 8 subscribe "Posteingang.Papierkorb" > 8 OK Subscribe completed. Probably combination of two known issues. (i) Localized name is set in trash folder name setting by localized Tb. mail.server.serverN.trash_folder_name = Posteingang/Papierkorb (ii) If IMAP path delimiter is ".", "/" in trash_folder_name is directly used for list command. Check mail.server.serverN.trash_folder_name setting. What real IMAP folder name do you really want to use as trash folder? Inbox.Trash Inbox.Papierkorb Posteingang.Trash Posteingang.Papierkorb To avoid your confusion by localized name, check with en-US build, and delete unwanted folders. Workaround: Put one of next in user.js. > user_pref("mail.server.serverN.trash_folder_name", "Inbox/Trash"); > user_pref("mail.server.serverN.trash_folder_name", "Inbox/Papierkorb"); > user_pref("mail.server.serverN.trash_folder_name", "Posteingang/Trash"); > user_pref("mail.server.serverN.trash_folder_name", "Posteingang/Papierkorb"); If you altered it at UI for IMAP delete model of "Move to trash", restart Tb.

> No Trash under Inbox. Papierkorb(real folder name, not translation of Trash by > Tb) under Inbox instead. Yes, because Thunderbird did not let me create Trash. I don't know why. When I reported the problem, I still had INBOX.Trash created by a different MUA. Nonetheless, the same problem happens. > How did you set it? Select the Inbox.Papierkorb via UI? Set via config editor? > Or put it in prefs.js manually? Via the UI. > What real IMAP folder name do you really want to use as trash folder? > Inbox.Trash Yes. But Thunderbird localizes Inbox to "Posteingang" and Trash to "Papierkorb", I guess that is the reason for the second "ghost-inbox" named "Posteingang.Papierkorb".

(In reply to comment #5) > But Thunderbird localizes Inbox to "Posteingang" and Trash to "Papierkorb", > I guess that is the reason for the second "ghost-inbox" named "Posteingang.Papierkorb". You are right. Bug 480393 occurs if localized Tb is used and the localization has localized trash name. And, problem of "list Posteingang/Papierkorb" also happens in your case, because your server uses "." as folder hierarchy delimiter. It's already known issue.