This bug was fixed in the package mythplugins -
0.22.0~trunk21556-0ubuntu1
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mythplugins (0.22.0~trunk21556-0ubuntu1) karmic; urgency=low
* New upstream checkout (r21556)
- Fixes unreliable DVD playback. (LP: #288816)
* mythweb.postinst:
- Make sure www-data can write to
** Attachment added: "AptOrdering.txt"
http://launchpadlibrarian.net/30505181/AptOrdering.txt
** Attachment added: "Dmesg.txt"
http://launchpadlibrarian.net/30505182/Dmesg.txt
** Attachment added: "DpkgTerminalLog.txt"
http://launchpadlibrarian.net/30505183/DpkgTerminalLog.txt
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pack