Mail.app’s handling of signatures is awful
macosxhints.com - A possible fix for vanishing Mail signatures. Yet another person complaining about Mail.app’s handling of signatures, and trying to provide some vague voodoo fix. I like Mail.app, but the signature-handling code is terrible: adding signatures to accounts is buggy, the app provides a seemingly random default signature for accounts without any signature set, it crashes (in a not easily repeatable way) if you edit or remove the auto-placed signature text, etc. I really hope Apple fix this in Leopard.