522 Error

This has been coming up rather frequently for me recently.
I took a screenshot of the error page.
I get this error so far on 2 different instances.

1. most frequently, when posting in a thread when I hit the submit button
regardless of the amount of data in that submission.

I cannot back up to the composed post as was prior to "submit"

I cannot drag across the address bar highlighting all but
"http://ift.tt/1sVRQqk" deleting the rest successfully.
It deletes, but the addressing in the address bar (http://ift.tt/1sVRQqk)
still gets the error page 522 error.

I can, delete all of the address, and go to thereeftank.com home page
go to forums and find my way back or link from email to where I was perhaps
and start my post all over ok.

2. While successfully checking threads in my User CP it may just
all of the sudden report the 522 error.
Edit: sorry the screenshot fails to upload (99Kb size)
but it suggests to the owner of the site, that something is hogging resources
on your website. It is a Host error on TRT.

Next time it happens I'll try to copy the link and follow up here.