Thank you for your bug. The backtrace indicates the crash happens to
gst-plugins-ugly0.10, reassigning
** Changed in: totem (Ubuntu)
Sourcepackagename: totem => gst-plugins-ugly0.10
Importance: Undecided => Medium
Status: Unconfirmed => Confirmed
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totem crashes when playing windows media
https://launchpad.net/bugs/71961