The IO error on the devices only seems to happen on Linux not my windows box. When I moved those units to the raspberry pi it started having issues.
I can't say for sure there isn't a problem with a cable but I can hook it back up to windows 7 tomorrow maybe and try that.
I built the version from the git. I don't so far dare to stop cron from killing it every half hour. I can't watch it constantly and so far my script to start them up at boot isn't working correctly.
I do have a side issue that isn't cgminer directly. I have been plagued by crashes for a while. I haven't in the past seen anything to make me think mining specifically caused it. The most recent crash left me with the following error. I am including the last line of cgminers output and the crash report. Crash was 3.5.1 not newest from git. crashed after 57 minutes of running. 3 more and it would have restarted at the hour.
BAJ 1Get Results failed (err=-7 amt=0) [2169.902077]unable to handle kernel NULL pointer dereference at Virtual Address 0000006c
[2169.910398] pyd=c362c000
[2169.918266] [0000006c] *pgd=18ccb831, *pte = 00000000, *ppte=00000000
[2169.929642] Internal Error: Oops: 17 [#1] PREEMPT ARM
Entering kdb (current=0xdbfd2500, pid 2222) Oops: (null)
due to oops @0xc02677b0
Pid: 2222, comm: ip
cpu: 0 Not tainted (3.6.11+ #371)
PC is at smsc95xx_async_cmd_callback+0x30/0x44
LR is at usb_hcd_giveback_urb+0x60/0xf4
pc : [] lr : [] psr: a0000193
sp : dc9b98d8 ip : 00000000 fp : dc984980
r10 : dc984980 r9 : f298052c r8 : ffffffb9
r7 : dbe35ba0 r6 : ffffffb9 r5 : c1528d60 r4 : dbf06dc0
r3 : 00000000 r2 : ffffffb9 r1 : 00000000 r0 : dbf06de0
Flags NvCv IRQs off FIQs on Mode svc_32 ISA ARM Segment User
Control:n 00c5387d Table: 03b2c008 DAC: 00000015
After that is some unwind kdb info I can type that up if you would like. It seems like there is a kernel error. I got lucky as for a change the monitor was still getting a signal. Usually power management manages to keep the signal off making the crashes far less useful. I don't know that this will help anything.