No one was messing with the c1ioo or any other machine. The medm screens for WFS and MC alignment froze while I was working on Rossa.
There were number of red lights pertaining to c1ioo machine on the CDS_FR_STATUS screen. So we logged into c1ioo from Rossa and restarted it with 'sudo shutdown -r now'. It came back up but the C1IOO_MC_TRANS_SUM, P and Y signals were not available on the C1IOO LOCKMC screen.
I saw several messages similar to the one here
Sat Nov 12 02:09:14 PST 2011
medmCAExceptionHandlerCb: Channel Access Exception:
Channel Name: Unavailable
Native Type: Unavailable
Native Count: 0
Message: Virtual circuit disconnect
Requested Type: TYPENOTCONN
Requested Count: 0
Source File: ../cac.cpp
Line number: 1126
The MC autolocker script wasnt running. The heartbeat bit was not blinking on the MC_LOCKMC screen. So we manually restarted the script. Hopefully it will return to normal operation.
I restarted the fb at Sat Nov 12 02:12:19 PST 2011 in an attempt to see this resolves the problem.