Log Message:
Update to 1.4.6

changes:
Updated translations and bug-fixes.

Among them:

#54319 - Message-list blank even tho there are messages (Jeff Stedfast)
#50535 - Doesn't handle EHLO errors proper (Jeff Stedfast)
#50485 - Problems with accentuated gpg passphrases (Jeff Stedfast)
#50096 - GroupWise attachments and indexing (Jeff Stedfast)
#45504 - Warning Dialogs "Error while 'Fetching Mail" On POP3
         auto download (Michael Zucchi)
#49357 - Email date is incorrect (Jeff Stedfast)
#46006 - Attempted ESMTP handshake with invalid IPv6 address (Jeff Stedfast)
#41610 - Crash if remote POP reports 0 byte len messag e(Michael Zucchi)
#48759 - Strange behaviour with save as dialog (Jeff Stedfast)
#47638 - Default charset is empty (Jeff Stedfast)
#48466 - Properties window open after attachment removed (Charles Zhang)
#48166 - Size filter doesnt remember the size (Jeff Stedfast)
#53530 - Duplicate of attachments are seen on forward as Redirect (Bill Zhu)
#48998 - Apply Button always remain activated (Charles Zhang)
#51551 - Encoding of the Organization is UNKNOWN (Suresh Chandrasekharan)
#40917 - backspace shouldn't highlight the whole remaining string in
         Setup Assistant (Suresh Chandrasekharan)
#47878 - Change "Helvetica" to "Sans Regular" for printing \ 
footers (Rodney Dawes)
#32996 - Can select VFolders as Offline folders in Evolution
	 Settings (Michael Zucchi)
#39410 - "Work offline" does not propobly sync all mails in \ 
"offline folders"
         (Michael Zucchi)
#48290 - Selecting inverse theme causes text to be printed white-on-white \ 
(Antonio Zu)
[...]

And many, many more.
see http://bugzilla.ximian.com/show_bug.cgi