Thunder bird has been slow to respone after upgrading to Ubuntu 9.10

[Ferdaus]

Binary package hint: thunderbird

After upgrading from Jaunty to Karmic (beta), Thunderbird has been slow to respond in every field of operation.

ProblemType: Bug
Architecture: i386
Date: Tue Oct 20 11:58:29 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: wl
Package: thunderbird 2.0.0.23+build1+nobinonly-0ubuntu1
ProcEnviron:
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.27-11.31-generic
SourcePackage: thunderbird
Uname: Linux 2.6.27-11-generic i686
XsessionErrors:
 (gnome-settings-daemon:5384): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (polkit-gnome-authentication-agent-1:5510): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nautilus:5472): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (gnome-panel:5470): Gdk-WARNING **: /build/buildd/gtk+2.0-2.18.2/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window
 (gdu-notification-daemon:5495): GduNotification-WARNING **: No notification area. Notification bubbles will not be displayed.

[Karsten (karsten-maxi-dsl)]

behaviour as described also seen here in 9.10 final (i386) - Thunderbird slows down the whole system

[Aaron C Spike (acspike)]

Could this be a duplicate of Bug #448678?