Are you sayng that in csstudio your peers are still connecting to you but your connection to them is showing red? This statrted happening to me too in mid March.
I tried restating the Cam but it was the same. I noticed the debug.txt file was huge. I deleted it the restarted cam and back to normal.. I had a look at the file and the check.log file which shows this
*** stack smashing detected ***: /emu/cccam/CCcam.x86 terminated
======= Backtrace: =========
/lib/i686/cmov/libc.so.6(__fortify_fail+0x50)[0xb75346d0]
/lib/i686/cmov/libc.so.6(+0xe067a)[0xb753467a]
/emu/cccam/CCcam.x86[0x8079555]
/emu/cccam/CCcam.x86[0x8079a57]
/emu/cccam/CCcam.x86[0x806955b]
/emu/cccam/CCcam.x86[0x80bfb34]
/emu/cccam/CCcam.x86[0x80bfca5]
/lib/i686/cmov/libpthread.so.0(+0x5955)[0xb76d9955]
/lib/i686/cmov/libc.so.6(clone+0x5e)[0xb751fe7e]
I have a script to restart it , which it does but no connection to others until i get rid of the debug.txt