Comment 53 for bug 148454

This might also explain https://launchpad.net/bugs/184519, which has 26 duplicates already, with this stack trace:

  http://launchpadlibrarian.net/12890099/Stacktrace.txt

(crash in vt_thread_start). Or was that actually fixed by dfcab49480565a7bcf71752c5b39eb367df81a19 "cleanly shutdown event logging threads"?