I looked at your website - the cost of your single blade is a half a bitcoin less than the cost of an Avalon mini...only difference is roughly 5.7-6X the hashing power.

By crashes do you mean the hashrate falls badly?

I noticed the BBB temperature effected hashrate.  My front fans aren't really directed at the module any more.  I have a piece of cardboard down from the front top edge to the front of the module board and air goes out the sides.  If I remove the cardboard, at least yesterday when I found this and haven't retested it since, if I remove the cardboard the hashrate in the first number crashes very quickly.  I put the cardboard back and it comes up pretty quickly.  I removed the BBB and put stick-on heatsinks on the middle chip as that's where my IR detector says is heating.  I had two 12 v fans I was going to put on a Blade but changed my mind.  I have one of these each on 2 sides of the one module aiming at the vrm's.  I also have a 3" dia 120vac fan, very deep, pointed in from the side passing air over the BBB.  Keeping the BBB cool seems critical.

With all the extra room I have in the Mercury I'm thinking of getting ribbon cables and double pins so as to move the BBB somewhere else in the box where it can be cooled better.

Since you have the big fan cooling the board, try putting cardboard to force the 2 intake fans air down onto the BBB and see if the miner crashes under 0.90 then.

root@Mercury-3DF:~# uptime
 22:51:08 up  5:17,  load average: 1.83, 1.95, 1.94


Darn, I was just going to put the cgminer stats line here but when I hit "q" and quit the screen, unlike with minepeon, cgminer quit.  So, I've just restarted it from the command line but it had been cooking along at 134GH/s avg for 5hours 17 minutes.

Just adjusted my cardboard.  Better leave ½ fan clear on each side of the center and the cardboard in that center forcing air down onto the center of the BBB. 

The stats came back up pretty quickly.
KnC 0: | 162.6G/131.5Gh/s | A:39300 R:1695 HW:3638 WU:2150.2/m

Having changed the cardboard slightly, the first figure seems higher which bodes for an overall higher avg if it keeps up.

BeagleBone Black - sorta like an RPi, for the uninitiated
http://beagleboard.org/Products/BeagleBone+Black/

I have one but I've never switched it on

Wow - you're still profiting of the stupidity of people not realising they will NEVER make 1.95 BTC with that crap.
Amazing.

You need a comma in there somewhere because that sentence has two meanings.

1. CGminer dev or not...if you're stuck on mining btc, only you yourself are acting like a dinosaur. (talking about mining btc in general)
2. CGminer dev or not...if you're stuck on mining btc only, you yourself are acting like a dinosaur. (talking about mining btc as opposed to mining something else)

I think from frankenmints POV any personal mining is worthless, we should just be buying and selling BTC or using cloud mining

kano, I know you mean well, but for some, it is worth paying to make your own BTC, even at a loss. What is it worth to not have a bank account or credit card with your name and all your info. on it? To get BTC, you either put your name in the bucket (banks, credit cards etc) or you mine your own....yes at some cost. I can think of many reasons why someone would still pay more for a BLADE than sign up for COINBASE or similar to buy BTC. Anyway, my 2 satoshis.

Can you uploud your filles for the stat?

cool, glad that helped someone...   

Not gonna happen
I've already got hardware from other companies that I help (and am working on at the moment) so priority of that is way higher.
... and this time of year there is a whole bunch of music work I do also.
Not really interested in hardware, that the company who sells it tells me: thanks for your software - sucked in - bye bye.
... and of course as I have stated before, I don't do remote access support to solve the problems of hardware that I don't have and will not be getting.

You do get that all these firmware/hardware issues are of KFC's own choice right?
Back in July we were told that the testing was off the critical path and delayed until August when they would like our input then.
But then when we asked again at the end of July they ignored us until the "sucked in - bye bye"

Funny, my emails to KFC were very civil, I guess that was my mistake ...