In reply to hstmoore:
In fairness to gethin, you could have worded the OP a bit better. You probably think you were writing "Hi, just checking in case there was a typo in my email address" but what gethin saw is what you put in the OP:
"I haven't received the pictures so something must have gone wrong!" which as plain text just looks impatient, especially with the exclamation mark.
If there is any winding-in-of-neck to be done, it's down to you.
In your position I would apologise to gethin as he only really wrote the same as me, just slightly different wording.