Oh, and I forgot to mention or make clear: The file /var/mail/myusername does not be reduzed to 0, and as the user myusername I can not manually delete this file, although (if I am not wrong!), I should be able to, as it is rw for me.
Something special (maybe this is important): The directory /var resides on an own partition, which is luks encrypted. But on the other machine (32-bit) where mutt is working well, is the same partition structure. What did I miss? Best Hans
