Got busy with life. The backend has been working flawlessly so I put all my new hardware in my case and fired it up. Same hung backend. Here's the backend log. Thanks!
Code:
2012-09-11T13:27:00.239197-05:00 Greed mythbackend[1907]: C thread_unknown mythcommandlineparser.cpp:2534 (ConfigureLogging) mythbackend version: fixes/0.25 [v0.25.2-9-ga72e341] www.mythtv.org
2012-09-11T13:27:00.239216-05:00 Greed mythbackend[1907]: C thread_unknown mythcommandlineparser.cpp:2536 (ConfigureLogging) Qt version: compile: 4.7.3, runtime: 4.7.3
2012-09-11T13:27:00.239221-05:00 Greed mythbackend[1907]: N thread_unknown mythcommandlineparser.cpp:2538 (ConfigureLogging) Enabled verbose msgs: general
2012-09-11T13:27:00.239226-05:00 Greed mythbackend[1907]: N thread_unknown logging.cpp:1176 (logStart) Setting Log Level to LOG_INFO
2012-09-11T13:27:00.239231-05:00 Greed mythbackend[1907]: I thread_unknown logging.cpp:229 (FileLogger) Added logging to the console
2012-09-11T13:27:00.239235-05:00 Greed mythbackend[1907]: I thread_unknown logging.cpp:369 (SyslogLogger) Added syslogging to facility local6
2012-09-11T13:27:00.239239-05:00 Greed mythbackend[1907]: I thread_unknown logging.cpp:425 (DatabaseLogger) Added database logging to table logging
2012-09-11T13:27:00.239242-05:00 Greed mythbackend[1907]: N thread_unknown logging.cpp:1215 (logStart) Setting up SIGHUP handler
2012-09-11T13:27:00.239246-05:00 Greed mythbackend[1907]: N thread_unknown mythdirs.cpp:51 (InitializeMythDirs) Using runtime prefix = /usr
2012-09-11T13:27:00.239250-05:00 Greed mythbackend[1907]: N thread_unknown mythdirs.cpp:64 (InitializeMythDirs) Using configuration directory = /home/mythtv/.mythtv
2012-09-11T13:27:00.339377-05:00 Greed mythbackend[1907]: I CoreContext mythcorecontext.cpp:227 (Init) Assumed character encoding: en_US.utf-8
2012-09-11T13:27:00.339398-05:00 Greed mythbackend[1907]: N CoreContext mythcontext.cpp:477 (LoadDatabaseSettings) Empty LocalHostName.
2012-09-11T13:27:00.339402-05:00 Greed mythbackend[1907]: I CoreContext mythcontext.cpp:481 (LoadDatabaseSettings) Using localhost value of Greed
2012-09-11T13:27:00.339407-05:00 Greed mythbackend[1907]: I CoreContext mythcontext.cpp:608 (TestDBconnection) Testing network connectivity to '192.168.0.50'
2012-09-11T13:27:00.339411-05:00 Greed mythbackend[1907]: I SystemManager system-unix.cpp:263 (run) Starting process manager
2012-09-11T13:27:00.339415-05:00 Greed mythbackend[1907]: I SystemSignalManager system-unix.cpp:485 (run) Starting process signal handler
2012-09-11T13:27:00.339419-05:00 Greed mythbackend[1907]: I SystemIOHandlerR system-unix.cpp:90 (run) Starting IO manager (read)
2012-09-11T13:27:00.339431-05:00 Greed mythbackend[1907]: I SystemIOHandlerW system-unix.cpp:90 (run) Starting IO manager (write)
2012-09-11T13:27:00.439552-05:00 Greed mythbackend[1907]: E CoreContext configuration.cpp:112 (Save) Could not open settings file /home/mythtv/.mythtv/config.xml for writing
2012-09-11T13:27:00.439571-05:00 Greed mythbackend[1907]: N CoreContext mythcorecontext.cpp:1354 (InitLocale) Setting QT default locale to EN_US
2012-09-11T13:27:00.439575-05:00 Greed mythbackend[1907]: I CoreContext mythcorecontext.cpp:1387 (SaveLocaleDefaults) Current locale EN_US
2012-09-11T13:27:00.439579-05:00 Greed mythbackend[1907]: N CoreContext mythlocale.cpp:121 (LoadDefaultsFromXML) Reading locale defaults from /usr/share/mythtv//locales/en_us.xml
2012-09-11T13:27:00.439583-05:00 Greed mythbackend[1907]: I CoreContext schemawizard.cpp:117 (Compare) Current MythTV Schema Version (DBSchemaVer): 1299
2012-09-11T13:27:00.539678-05:00 Greed mythbackend[1907]: I CoreContext mythtranslation.cpp:66 (load) Loading en_us translation for module mythfrontend
2012-09-11T13:27:00.539698-05:00 Greed mythbackend[1907]: N CoreContext main_helpers.cpp:556 (run_backend) MythBackend: Starting up as the master server.
2012-09-11T13:27:00.539703-05:00 Greed mythbackend[1907]: I CoreContext v4lchannel.cpp:661 (SetInputAndFormat) V4LChannel(/dev/video0): SetInputAndFormat(1, NTSC) (v4l v2) input_switch: 0 mode_switch: 1
2012-09-11T13:27:00.639787-05:00 Greed mythbackend[1907]: I CoreContext v4lchannel.cpp:661 (SetInputAndFormat) V4LChannel(/dev/video0): SetInputAndFormat(1, NTSC) (v4l v2) input_switch: 0 mode_switch: 0
2012-09-11T13:27:00.639810-05:00 Greed mythbackend[1907]: I CoreContext v4lchannel.cpp:661 (SetInputAndFormat) V4LChannel(/dev/video1): SetInputAndFormat(2, NTSC) (v4l v2) input_switch: 0 mode_switch: 1
2012-09-11T13:27:00.739890-05:00 Greed mythbackend[1907]: I CoreContext v4lchannel.cpp:661 (SetInputAndFormat) V4LChannel(/dev/video1): SetInputAndFormat(2, NTSC) (v4l v2) input_switch: 0 mode_switch: 0
2012-09-11T13:27:00.739900-05:00 Greed mythbackend[1907]: I CoreContext v4lchannel.cpp:661 (SetInputAndFormat) V4LChannel(/dev/video2): SetInputAndFormat(3, NTSC) (v4l v2) input_switch: 0 mode_switch: 1
2012-09-11T13:27:00.840002-05:00 Greed mythbackend[1907]: I CoreContext v4lchannel.cpp:661 (SetInputAndFormat) V4LChannel(/dev/video2): SetInputAndFormat(3, NTSC) (v4l v2) input_switch: 0 mode_switch: 0
2012-09-11T13:27:00.840045-05:00 Greed mythbackend[1907]: W CoreContext scheduler.cpp:208 (VerifyCards) Scheduler: Listings source '' is defined, but is not attached to a card input.
2012-09-11T13:27:01.040230-05:00 Greed mythbackend[1907]: I CoreContext programinfo.cpp:2052 (CheckProgramIDAuthorities) Found 1 distinct programid authorities
2012-09-11T13:27:01.040251-05:00 Greed mythbackend[1907]: I Scheduler mythdbcon.cpp:422 (getStaticCon) New static DB connectionSchedCon
2012-09-11T13:27:01.040256-05:00 Greed mythbackend[1907]: I CoreContext serverpool.cpp:395 (listen) Listening on TCP 127.0.0.1:6544
2012-09-11T13:27:01.040261-05:00 Greed mythbackend[1907]: I CoreContext serverpool.cpp:395 (listen) Listening on TCP 192.168.0.50:6544
2012-09-11T13:27:01.040265-05:00 Greed mythbackend[1907]: I CoreContext serverpool.cpp:395 (listen) Listening on TCP [0:0:0:0:0:0:0:1]:6544
2012-09-11T13:27:01.040269-05:00 Greed mythbackend[1907]: E CoreContext serverpool.cpp:407 (listen) Failed listening on TCP [fe80:0:0:0:230:67ff:fe09:3936%eth0]:6544 - Error 9: The address is not available
2012-09-11T13:27:01.040274-05:00 Greed mythbackend[1907]: E CoreContext mediaserver.cpp:86 (Init) MediaServer::HttpServer Create Error
2012-09-11T13:27:01.040278-05:00 Greed mythbackend[1907]: I CoreContext serverpool.cpp:395 (listen) Listening on TCP 127.0.0.1:6543
2012-09-11T13:27:01.040281-05:00 Greed mythbackend[1907]: I CoreContext serverpool.cpp:395 (listen) Listening on TCP 192.168.0.50:6543
2012-09-11T13:27:01.040285-05:00 Greed mythbackend[1907]: I CoreContext serverpool.cpp:395 (listen) Listening on TCP [0:0:0:0:0:0:0:1]:6543
2012-09-11T13:27:01.040288-05:00 Greed mythbackend[1907]: E CoreContext serverpool.cpp:407 (listen) Failed listening on TCP [fe80:0:0:0:230:67ff:fe09:3936%eth0]:6543 - Error 9: The address is not available
2012-09-11T13:27:01.040292-05:00 Greed mythbackend[1907]: C CoreContext main_helpers.cpp:639 (run_backend) Backend exiting, MainServer initialization error.
2012-09-11T18:27:11.185321-05:00 Greed mythbackend[1907]: I HouseKeeping housekeeper.cpp:225 (RunHouseKeeping) Running housekeeping thread
2012-09-11T18:27:11.185340-05:00 Greed mythbackend[1907]: I JobQueue mythdbcon.cpp:395 (PurgeIdleConnections) New DB connection, total: 4
2012-09-11T18:27:21.191966-05:00 Greed mythbackend[1907]: E Expire autoexpire.cpp:161 (CalcParams) AutoExpire: Filesystem Info cache is empty, unable to calculate necessary parameters.
2012-09-11T18:27:21.191985-05:00 Greed mythbackend[1907]: N Expire autoexpire.cpp:640 (SendDeleteMessages) Expiring 2479 MB for 1061 at 2012-09-04T21:01:00 => "Covert Affairs":"Glass Spider"
2012-09-11T18:27:21.191989-05:00 Greed mythbackend[1907]: N Expire autoexpire.cpp:640 (SendDeleteMessages) Expiring 2443 MB for 1077 at 2012-09-03T21:00:00 => Perception:Kilimanjaro
2012-09-11T18:27:21.191993-05:00 Greed mythbackend[1907]: E Expire autoexpire.cpp:421 (ExpireRecordings) AutoExpire: Filesystem Info cache is empty, unable to determine what Recordings to expire