Thunderbird va in crash sotto gnome

[FedAm]

In sarge e gnome 2.8, mozilla-thunderbird 0.9-6 va in crash sotto alcune 
azioni tra cui andare al successivo messaggio non letto e cancellare la 
sottoscrizione a un newsgroup.

Il crash non si verifica in ambiente iceWM e KDE
Messaggio in uscita:
/usr/lib/mozilla-thunderbird/run-mozilla.sh: line 451:  4787 Killed 
             "$prog" ${1+"$@"}

Non so se possa essere importare, ma debsums porta alle seguenti 
inconsistenze:
var/lib/mozilla-thunderbird/defaults.ini 
  FAILED
var/lib/mozilla-thunderbird/components/xpti.dat 
  FAILED
var/lib/mozilla-thunderbird/components/compreg.dat 
  FAILED
var/lib/mozilla-thunderbird/chrome/installed-chrome.txt 
  FAILED
var/lib/mozilla-thunderbird/chrome/overlayinfo/communicator/content/overlays.rdf 
FAILED
var/lib/mozilla-thunderbird/chrome/overlayinfo/navigator/content/overlays.rdf 
FAILED
var/lib/mozilla-thunderbird/chrome/overlayinfo/messenger/content/overlays.rdf 
FAILED
var/lib/mozilla-thunderbird/chrome/overlayinfo/browser/content/overlays.rdf 
FAILED
var/lib/mozilla-thunderbird/components.ini 
  FAILED
var/lib/mozilla-thunderbird/extensions/Extensions.rdf 
  FAILED
var/lib/mozilla-thunderbird/extensions/installed-extensions.txt 
  FAILED
debsums: can't open mozilla-thunderbird file 
usr/lib/mozilla-thunderbird/defaults/profile/extensions/installed-extensions.txt 
(No such file or directory)
usr/lib/mozilla-thunderbird/chrome/chrome.rdf 
  FAILED
usr/lib/mozilla-thunderbird/defaults/profile/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}/uninstall/Uninstall 
FAILED

Qualcuno ne sa qualche cosa?
Grazie
FedAm
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