26.00 BTC?? WTF

I have been running 5 antminer u1's for 2 or 3 weeks now and I have a USB fan to cool them. When I started using them I noticed based on the site for the pool I was getting about 7 to 8 Mhash/s. Now I'm getting just over 6. Is this due to difficulty going up or do I have a miner about to fail?

At bitcoin.sipa.be, 'computation speed growth' chart just got a new y label: -0.5% per day!

Pulled a new clone this evening and now seeing:

[2014-02-07 02:36:31] AMU: Applying rule antminer:clock=x0981: Unknown option: clock

... when bfgminer launches.

Suggestions?

I switched to Eligius since I have way better earnings there. Especially with rounds of 15+ hours on Slush

I just wrote an app that will monitor the slush api and tells you when the pool finds a block.
It can optionally send push notifications to iOS/android via https://pushover.net

https://github.com/professoruss/blockfound

Let me know if you have any feedback or can find a cheaper push app (pushover is $4.99)

output looks like this:
Found new block!! Elapsed: 11:52:20 Hashrate: 879340.212GH/s