still drops every few hours.
Here is oscam log
2012/07/07 21:39:56 575860 r >> OSCam << cardserver log switched, version 1.20-unstable_svn, build #6059 (mips-tuxbox-linux)
2012/07/07 21:39:56 575860 r version=1.20-unstable_svn, build #6059, system=mips-tuxbox-linux, nice=-1
2012/07/07 21:39:56 575860 r client max. idle=120 sec, debug level=0
2012/07/07 21:39:56 575860 r max. logsize=10 Kb, loghistorysize=4096 bytes
2012/07/07 21:39:56 575860 r client timeout=5000 ms, fallback timeout=2500 ms, cache delay=120 ms
2012/07/07 21:39:56 575860 r ERROR in IO_Serial_Read (errno=0 Success)
2012/07/07 21:39:59 575860 r ERROR in IO_Serial_Read (errno=0 Success)
2012/07/07 21:39:59 575860 r [videoguard2-reader] classD0 ins40: (-2) status not ok c4 a8
2012/07/07 21:39:59 575860 r Error processing ecm for caid 0963, srvid 2582 (servicename: 0963:2582 unknown) on reader ***uk.
and in the messages:
Jul 7 21:28:06 bm750 user.debug kernel: ofo requeuing : rcv_next 81F35754 seq 81F35754 - 81F35CB8
Jul 7 21:28:06 bm750 user.debug kernel: ofo requeuing : rcv_next 81F35CB8 seq 81F35CB8 - 81F3621C
Jul 7 21:28:06 bm750 user.debug kernel: ofo requeuing : rcv_next 81F3621C seq 81F3621C - 81F3626C
Jul 7 21:28:06 bm750 user.debug kernel: ofo requeuing : rcv_next 81F3626C seq 81F3626C - 81F367D0
Jul 7 21:28:06 bm750 user.debug kernel: out of order segment: rcv_next 81F36884 seq 81F36DE8 - 81F3734C
Jul 7 21:28:06 bm750 user.debug kernel: out of order segment: rcv_next 81F36884 seq 81F3734C - 81F378B0
Jul 7 21:28:06 bm750 user.debug kernel: out of order segment: rcv_next 81F36884 seq 81F378B0 - 81F37E14
Jul 7 21:28:07 bm750 user.debug kernel: out of order segment: rcv_next 81F36884 seq 81F37E14 - 81F38378
Jul 7 21:28:07 bm750 user.debug kernel: ofo requeuing : rcv_next 81F36DE8 seq 81F36DE8 - 81F3734C
Jul 7 21:28:07 bm750 user.debug kernel: ofo requeuing : rcv_next 81F3734C seq 81F3734C - 81F378B0
Jul 7 21:28:07 bm750 user.debug kernel: ofo requeuing : rcv_next 81F378B0 seq 81F378B0 - 81F37E14
Jul 7 21:28:07 bm750 user.debug kernel: ofo requeuing : rcv_next 81F37E14 seq 81F37E14 - 81F38378
Jul 7 21:28:07 bm750 user.debug kernel: out of order segment: rcv_next 81F393BE seq 81F39922 - 81F39E86
Jul 7 21:28:07 bm750 user.debug kernel: out of order segment: rcv_next 81F393BE seq 81F39E86 - 81F3A3EA
Jul 7 21:28:07 bm750 user.debug kernel: out of order segment: rcv_next 81F393BE seq 81F3A3EA - 81F3A94E
Jul 7 21:28:07 bm750 user.debug kernel: out of order segment: rcv_next 81F393BE seq 81F3A94E - 81F3AEB2
Jul 7 21:28:07 bm750 user.debug kernel: out of order segment: rcv_next 81F393BE seq 81F3AEB2 - 81F3AEDF
Jul 7 21:28:09 bm750 user.debug kernel: ofo requeuing : rcv_next 81F39922 seq 81F39922 - 81F39E86
Jul 7 21:28:09 bm750 user.debug kernel: ofo requeuing : rcv_next 81F39E86 seq 81F39E86 - 81F3A3EA
Jul 7 21:28:09 bm750 user.debug kernel: ofo requeuing : rcv_next 81F3A3EA seq 81F3A3EA - 81F3A94E
Jul 7 21:28:09 bm750 user.debug kernel: ofo requeuing : rcv_next 81F3A94E seq 81F3A94E - 81F3AEB2
Jul 7 21:28:09 bm750 user.debug kernel: ofo requeuing : rcv_next 81F3AEB2 seq 81F3AEB2 - 81F3AEDF
Jul 7 21:28:09 bm750 user.debug kernel: out of order segment: rcv_next 81F3AF18 seq 81F3B47C - 81F3B9E0
Jul 7 21:28:09 bm750 user.debug kernel: out of order segment: rcv_next 81F3AF18 seq 81F3B9E0 - 81F3BF44
Not sure if that is relevant.