It happened again, and this time I was just reading news off of the intraweb, so it's possible that my suspicions were correct, that it had nothing to do with what I was doing. Here's the new crash report... (I'm assuming the old one was over-written, because I certainly didn't delete it).
** Attachment added: "New (?) crash report" http://librarian.launchpad.net/5859051/_usr_bin_beagled.1000.crash -- Crash while renaming mp3 on usb memory stick https://launchpad.net/bugs/81150 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs