New diff is now 267M

It's weird that nobody complained here.

Approx. cluster performance (30 min average):   173333.022 Ghash/s

It doesn't say that. It says that people who have passwords that have been compromised from somewhere else who also mine have had their accounts robbed.

So today it has been "only" some 41.4 %... :-)

Got a new avalon 4 module for $900 bucks (local cash buy) and I am actually hopeful to see return! I don't pay for electricity.

Right now I have it set to chip frequency of 300M which is default. Getting a modest 96 gh/s avg in cgminer (down to 92 back up to 99-100 consistently)
Question unrelated to pool : Anyone successfully overclock without spending money on a new PSU?

Specific pool questions:

worker1   0   23562   20941026.0443   0 minutes   19543.843   
worker2   1   113537   102264510.5692   0 minutes   94174.913

These are my workers should be about 113gh/s avg
 
Average hashrate in last 10 rounds: 106240 Mhash/s

I am pretty certain there was no downtime for past 2 days. Payouts are all consistent.

Could there be something to this? I realize this is an accumulative avg and not an instant reading of current hashing power, but I'm pretty sure i've hashed long enough to have that avg be at it's highest possible.

Any words/advice?

If the error rate is similar to "blades"
Hardware errors could be as much as 1% that's 1.13Gh
Rejected shares could be another 5% thats 5.65Gh

In that case the device is performing ok.

Where is all this hashing power coming from? Someone giving BFLs for free or something?

The ones that are still working, anyway.

The fastest user in the last hour over at BTC Guild is hashing at 84,649.78 GH/s.  Who's got the resources to have an 85 TH/s farm?  That is indeed crazy.