Re people taking a while to get back to an email:
Has anyone else been noticing long delays in delivering emails on some servers? Sometimes we've been getting, for example, an email sent at 11 a.m. immediately and then a 9:30 a.m. email from the same person appears in the in box several hours or even a day later.
Sometimes if you're surprised than a crucial email has not gotten a response, it could pay to follow up with a phone call.