It started with a message, "your inbox is full, try to delete some mails". The message seemed odd, to my knowledge there is not space limitation in the program. After deleting a number of mails with big enclosures, some mails will not open. When clicked on, it seems as if another mail is opened, namely the last one opened, only that the text area is blank. It has happened before but then the mails did open but contained html code and fragments from other mails. New mails open without problems. It is only some old mails that is affected.