Hi, my mail reader (XFmail) has an option to lock the mail spool with either dotlock or kernel lock. Lately (potato) I have had some problems with XFmail and locking of the spool file. It crashes after the file is locked, and I have to kill the lock process. What is the difference between these two lock methods, and which one would be considered to be most "stable"? I do also have the option to use both, but why would I want that? TIA //Christian