Pidgin: Unable to validate certificate for omega.contacts.msn.com

[Hansen]

Binary package hint: pidgin

Have two computer with maverick on and using Pidgin IM.
Starting today MSN account cannot loggin and gives error:

SSL Certificate Error
Unable to validate certificate
The certificate for omega.contacts.msn.com could not be validated. The certificate chain presented is invalid.

Error occurs on both computers.
I tried with another user.
Tried deleting ceritficate file in ./pruple/certificates/x509/tls_peers
Tried "using http method" from advanced. (it works once and a while, after selveral retries but is not consistent)
I have i friend who has the same problem today, but "using http method" works for him.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: pidgin 1:2.7.3-1ubuntu3.1
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
Architecture: i386
Date: Thu Nov 18 15:58:50 2010
ExecutablePath: /usr/bin/pidgin
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 LANG=en_DK.utf8
 SHELL=/bin/bash
SourcePackage: pidgin

[Zaphod (flerche)]

Same problem with 10.04/Pidgin 2.6.6 after SSL-Securityupgrade this morning.
Restarting pidgin solves this for me ...

[Chad A Davis (chadadavis)]

MSN updated their certificate on 2010-11-15 it seems. You can replace the one in Pidgin explicitly:

http://ubuntuforums.org/showthread.php?t=1624788

[Carl Simpson (cwd-simpson)]

@Zaphod

If you're talking about the update of openssl from 0.9.8o-1ubuntu4.1 to 0.9.8o-1ubuntu4.2, I haven't installed those yet but still get the problem, so I think it's irrelevant.

[Zaphod (flerche)]

Prolem persistet this morning, the solution Chad Davis presents in #3 solved the problem for me ...

[Hansen (moteprime)]

The solution in #3 also works for me.
The direct link to the solution link is here:
http://retrohack.com/why-cant-we-all-just-get-along/#more-3107