Unfortunatly even that has happened (well, not email... I would never display my email in public but pm are bad enough ^^"). Moreover if you have 5 threads a day poping up asking you why the hell that chapter hasn't been released already, preferable the day before, does make you feel like smashing your head against a wall.
Of course I know it's nothing personally but there is a limit to patience. I know it doesn't look it but it takes a ridiculous amount of time, energy and manpower (usually at least, even though there are indivuduals who manage to do all work alone) to release even one chapter. That's why I always tell people to join the groups and work with them. Their patience level for waiting on release would go up immensely ;)