in reply to Re: Tk failed with eXceed: BadAtom
in thread Tk failed with eXceed: BadAtom

X Error of failed request: BadAtom BadDrawable - FedoraForum.org -> 3.13 - I upgraded to OpenSSH 3.8 and some X11 programs stopped working.
As documented in the 3.8 release notes, ssh will now use untrusted X11 cookies by default. The previous behaviour can be restored by setting ForwardX11Trusted yes in ssh_config.