Maybe someone has some insight here, I posted this since I couldn't find anyone with a similar issue: https://bitcointalk.org/index.php?topic=350745.msg3754988#msg3754988

Cliff Notes:
I just bought a 10 blade setup Rev 2.01 with backplane and HP PSU from a seller on eBay, the actual blades were from JonesGear.

All 10 blades reboot every hour (58:30 to be exact) on the hour without fail.  They aren't just switching pools (which are the same entered two times), the uptimes are going back to 0. 

The blades are connected to BFGminer running the proxy, and they hash nicely while connected, but ever hour they all restart simultaneously, which obviously pisses off the proxy and the pool, so I have a small recovery period with rejects, and stales while the blades come back up to speed.

Please help... this is making me nuts.  As I noted in my thread, I have 2 PSUs on the way hedging my bets that this is an issue with the PSU. 

Thanks in advance.