Hey, bud. Take a look at the chart again and focus on what Caze just told you.
Based on your post here:
The cards are hashing at 1780Kh/s normally,
Then your three average is EXACTLY what you are expecting it to be.
No That's just the hash of two cards in WU: not my full hash rate, And I've been happily achieving 1.85-1.9 Mh/s for weeks, It's not like I don't know how much power I've got. it's clearly dropped a hell of a lot since yesterday