setup: computer 'tv' is masterbackend, zonneslag, zonnekind two computers with frontend.  On zonneslag also backend can be running (in this log the backend on zonneslag is also running).  
log is from masterbackend tv.  

Apr  7 12:20:06 tv mythlogserver: mythbackend[3247]: I ProcessRequest ringbuffer.cpp:1098 (WaitForAvail) RingBuf(/recording/23025_20130407095138.mpg): Waited 0.5 seconds for data #012#011#011#011to become available... 69216 < 196608
Apr  7 12:20:09 tv mythlogserver: mythbackend[3247]: I ProcessRequest ringbuffer.cpp:1098 (WaitForAvail) RingBuf(/recording/23025_20130407095138.mpg): Waited 0.2 seconds for data #012#011#011#011to become available... 167364 < 196608
Apr  7 12:20:50 tv mythlogserver: mythbackend[3247]: I HouseKeeping housekeeper.cpp:221 (RunHouseKeeping) Running housekeeping thread
Apr  7 12:21:15 tv mythlogserver: mythbackend[3247]: I Scheduler scheduler.cpp:2130 (HandleReschedule) Reschedule requested for MATCH 0 0 0 - EITScanner
Apr  7 12:21:15 tv mythlogserver: mythbackend[3247]: I Scheduler scheduler.cpp:2243 (HandleReschedule) Scheduled 15 items in 0.1 = 0.04 match + 0.01 check + 0.06 place
Apr  7 12:22:11 tv mythlogserver: mythbackend[3247]: I ProcessRequest ringbuffer.cpp:1098 (WaitForAvail) RingBuf(/recording/23025_20130407095138.mpg): Waited 0.2 seconds for data #012#011#011#011to become available... 109664 < 131072
Apr  7 12:22:33 tv mythlogserver: mythbackend[3247]: I ProcessRequest mainserver.cpp:1395 (HandleAnnounce) MainServer::ANN Monitor
Apr  7 12:22:33 tv mythlogserver: mythbackend[3247]: I ProcessRequest mainserver.cpp:1397 (HandleAnnounce) adding: tzcheck as a client (events: 0)
Apr  7 12:22:35 tv mythlogserver: mythbackend[3247]: I ProcessRequest mainserver.cpp:1445 (HandleAnnounce) adding: zonneslag as a slave backend server
Apr  7 12:22:44 tv mythlogserver: mythbackend[3247]: I TVRecEvent tv_rec.cpp:1043 (HandleStateChange) TVRec(4): Changing from WatchingLiveTV to None
Apr  7 12:22:44 tv mythlogserver: mythbackend[3247]: I TVRecEvent tv_rec.cpp:830 (FinishedRecording) TVRec(4): FinishedRecording(23025_2013-04-07T09:51:38Z) damaged recq:<RecordingQuality overall_score="0" key="23025_2013-04-07T09:51:38Z" countinuity_error_count="2" packet_count="5948066">#012    <Gap start="2013-04-07T09:00:00Z" end="2013-04-07T09:51:38Z" duration="3098" />#012    <Gap start="2013-04-07T10:22:44Z" end="2013-04-07T11:00:00Z" duration="2235" />#012</RecordingQuality>
Apr  7 12:22:44 tv mythlogserver: mythbackend[3247]: I Socket mythdbcon.cpp:409 (PurgeIdleConnections) New DB connection, total: 19
Apr  7 12:22:46 tv mythlogserver: mythbackend[3247]: I ProcessRequest mainserver.cpp:1395 (HandleAnnounce) MainServer::ANN Playback
Apr  7 12:22:46 tv mythlogserver: mythbackend[3247]: I ProcessRequest mainserver.cpp:1397 (HandleAnnounce) adding: zonnekind as a client (events: 0)
Apr  7 12:22:46 tv mythlogserver: mythbackend[3247]: I TVRecEvent tv_rec.cpp:1043 (HandleStateChange) TVRec(4): Changing from None to WatchingLiveTV
Apr  7 12:22:46 tv mythlogserver: mythbackend[3247]: I TVRecEvent tv_rec.cpp:3562 (TuningCheckForHWChange) TVRec(4): HW Tuner: 4->4
Apr  7 12:22:46 tv mythlogserver: mythbackend[3247]: W TVRecEvent dvbchannel.cpp:347 (CheckFrequency) DVBChan(4:/dev/dvb/adapter4/frontend0): Your frequency setting (12187000) is out of range. (min/max:950000/2150000)
Apr  7 12:22:46 tv mythlogserver: mythbackend[3247]: W TVRecEvent dvbchannel.cpp:381 (CheckOptions) DVBChan(4:/dev/dvb/adapter4/frontend0): Selected fec_inner parameter unsupported by this driver.
Apr  7 12:23:11 tv mythlogserver: mythbackend[3247]: E Update mythsocket.cpp:520 (readStringList) MythSocket(1d43d50:104): readStringList: Error, timed out after 30000 ms.
Apr  7 12:23:11 tv mythlogserver: mythbackend[3247]: E Update mainserver.cpp:5740 (connectionClosed) Slave backend: zonneslag no longer connected
Apr  7 12:23:11 tv mythlogserver: mythbackend[3247]: E Update playbacksock.cpp:114 (SendReceiveStringList) PlaybackSock::SendReceiveStringList(): No response.
Apr  7 12:23:11 tv mythlogserver: mythbackend[3247]: N Update autoexpire.cpp:264 (CalcParams) AutoExpire: CalcParams(): Max required Free Space: 3.0 GB w/freq: 7 min
Apr  7 12:23:11 tv mythlogserver: mythbackend[3247]: N CoreContext autoexpire.cpp:264 (CalcParams) AutoExpire: CalcParams(): Max required Free Space: 3.0 GB w/freq: 7 min
Apr  7 12:23:11 tv mythlogserver: mythbackend[3247]: E TVRecEvent dvbchannel.cpp:1102 (GetUncorrectedBlockCount) DVBChan(3:/dev/dvb/adapter4/frontend0): Getting Frontend uncorrected block count failed.#012#011#011#011eno: Bewerking wordt niet ondersteund (95)
Apr  7 12:23:11 tv mythlogserver: mythbackend[3247]: W TVRecEvent dvbsignalmonitor.cpp:92 (DVBSignalMonitor) DVBSM(/dev/dvb/adapter4/frontend0): Cannot count Uncorrected Blocks#012#011#011#011eno: Bewerking wordt niet ondersteund (95)
Apr  7 12:23:11 tv mythlogserver: mythbackend[3247]: I TVRecEvent tv_rec.cpp:1043 (HandleStateChange) TVRec(4): Changing from WatchingLiveTV to None
Apr  7 12:23:11 tv mythlogserver: mythbackend[3247]: W ProcessRequest mainserver.cpp:5841 (connectionClosed) MainServer: Unknown socket closing MythSocket(0x1cf89b0)
Apr  7 12:23:11 tv mythlogserver: mythbackend[3247]: E ProcessRequest mythsocket.cpp:344 (writeStringList) MythSocket(1cf89b0:-1): writeStringList: Error, socket went unconnected.#012#011#011#011We wrote 0 of 10 bytes with 1 errors#012#011#011#011starts with: 2       OK
Apr  7 12:23:12 tv mythlogserver: mythbackend[3247]: I ProcessRequest mainserver.cpp:1445 (HandleAnnounce) adding: zonneslag as a slave backend server


