Red system message: "your account has been reported for hacking"

This just popped up in one of my chat boxes on my Wizard. Can anyone clarify what this is all about?

Some background: I play on different physical machines, and did not get this message on the other account (was only playing two on this particular occassion).

 

Likely the same reason it happened to this person: http://www.takproject.net/forums/index.php?threads/lag-hacking.1834/#post-9278

 

Seriously past due on that call to my ISP complaining about not getting what I'm paying for =/