It's very annoying the way I have to get half way through writing a long detailed explanation of why someone is wrong before I figure out why they're right.
@simontatham Happens a fair bit in support. 'customer are clearly wrong, but let's just check'. 'uh, wait, that doesn't look right. Neither does that. sigh'.

@syllopsium @simontatham
Oh yes.

"User must be using it wrong. There couldn't possibly be anything wrong with the server or the network. If there was, monitoring would have alerted the NOC."

Umm, tail some log files just to be sure.

Something *is* wrong with the server or the network. And monitoring missed it.

* Fix fault.
* Fix monitoring.
* Thank user for getting in touch.