I've seen the "could not open lock file" message before and it appears to be benign. I don't know about the "pipe to DADaemon" message, that might not be mail-related.
I was getting this warning "DA|Could not open the lock file at /tmp/DAAccountsLoading.lock. We'll load the accounts anyway, but bad things may happen" in my MFMailComposeViewController because I had.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.