One of the things that seems to be happening once in a while now to me is slow email - particularly receipt. Monday I emailed a friend of mine at a local financial institution about getting together Monday evening to tear apart an old neighborhood picnic table and putting it out in front of my house for trash pickup (I know, exciting life - but it was broken, he has a truck, it all is legit, we don't do this sort of thing for kicks...). He called me Monday evening and we did just that.
Wednesday afternoon I received his email response - dated 6/9/8 - about time for tearing the table apart. I emailed him to let him know about the delay. I think that if you discover an email delay between yourself and another person, you ought to let them know - they almost never have the ability to check out their mailserver about possible problems, but at least they can tell whoever IS responsible for the mailservers about a possible problem.