Not to pile on here... but aren't Rosewill PSUs pretty much 'bottom o' the barrel' too?  They're Newegg's private budget label.

True, but certain brands/models get higher quality components and workmanship.  And substandard units get budget labels.  Nothing is wasted.  But "you get what you pay for" is oftentimes true.

Lol, being a PSU snob has come 'round and bit me in the ass!

Two pi's and 2 SD cards now appear to be faulty and or corrupted.  The pi's boot up but then they go into a never ending cycle of debugging gibberish.

Where do I start?!  I know, go back and read... doing that now.  But if anyone can point me to a shortcut, that would be cool. 

I downloaded the img file.  So I just copy that to a new SD card then?  Do I need to install chainminer too?

ok Im freaking out a little bit....are there problems with the raspberry Pis on the current M2 boards that are expected for october delivery?  Does using a ribbon cable seem to address these issues (someone said that the interface used to connect the PI to the M-Board is not the best way to power the pi is there is no overvoltage regulation?  Its sounding like the input from the mboard eventually gets high like around 5.4V when it should be staying around 5v even?  I'll email their support to be sure...but I was wondering if you guys could put my fears to ease beforehand?  Does having a different amount of H-boards connected make a difference to longevity?  I'm also planning to install into a case made by spotswood will the fans used hopefully mitigate the problem with the pi?  Should I consider buying a 2nd pi and sd card to make a drop in backup?  Have you guys done the same if the answer to that was yes?  I've already dropped a substantial amt of coin on a miner from them but in retrospect I wish i just went along with cex.io now that i see its on demand.

just export a separate directory for each raspberry pi and associate it with the IP address each individual pi is booted with (as specified in the cmdline.txt). Then youretc/exports file should look similar to this:
Before, you should have copied the rootfs to the server, e.g. by mounting directly the SD card:
mountdev/sdb2mnt/sdb2
mkdir -pvar/lib/tftpboot/raspberry/template
cp -axmnt/sdb2/*var/lib/tftpboot/raspberry/template

and populate each new client:
mkdirvar/lib/tftpboot/raspberry/192.168.1.249
cp -axvar/lib/tftpboot/raspberry/template/*var/lib/tftpboot/raspberry/192.168.1.249

The IPs dependent on your particular network configuration.

As long as the number of clients is low, the network and the server should be able to handle it. If somebody has access to >40 pi's, it would be worth some benchmarking to find out how large this can scale.

Problem resolved and lesson learned.  I just had to recreate the img file on the SD and reconfigure.  Took 30 minutes and most of that time was spent waiting for img file to download and copy to the SD card.  Panic attack aborted!

And the lessoned learned is... don't be a dick!  Or the pi gods will get you.  Lol.

Good to hear that you're back up and running . It's also encouraging that your RPis weren't toasted, so this may not be related to the power issue. Are you getting stable 5V output from your m-boards by the way or do you see the worrying voltages that dracore has seen?

Heck even without KNC, but looking at calculator (the % increase, 30 days 126%,60 days 376%, 90 days 597%) and taking into account pencil-modding new board (EU thread) to 35Gh/s
Is not even going to come even close to ROI at $500 per H-board. 
My $3500 investment (of 7 H-boards) would leave me $1290 in the hole and that's with 0 electricity costs with me starting to mine 1st of Oct.

http://mining.thegenesisblock.com/

Remember that Dave is just a resseler. Tytus is a producer of the boards and founder of 100TH mine. MBP is a host of 200TH mine and is obligated to deliver this hash power as fast as possible. That means no stock for resseling. Punin only resseling thats why he has stock and already sends October orders.