Hi My Thunderbird profile appears to be corrupted. Some of the issues I've been having include: ~Thunderbird crashes for no apparent reason. ~Sometimes it re-downloads emails (old or new) in one or more POP & IMAP email accounts. Sometimes two copies of the same email are re-downloaded at once. ~Sometimes an attachment is corrupted and will not open or if it does some of it is missing or jumbled. I have to re-download them from the provider's site. The size of the attachment is the same whether it's corrupted or fine. ~Sometimes emails appear with no "header" information (Sender, Subject, Date etc) just a pile of garbled characters in the body. ~The RHS day's event view in calendar does not always update to the current date. I have been using Thunderbird for over 15 years so my profile folder probably has a few files that may be corrupt or obsolete. Is there any way to clean out the profile folder of all non required/old files or to "repair" it by overwriting some of the files. Alternatively, can I move my current email accounts and local folders, contacts, calendar and filters to a new profile so as to have a "clean" start. Thank you for your assistance!