mail/thunderbird looks very strange

[Guy Middleton]

I have a 4.9-RELEASE system, with ports cvsup-ed today.  Thunderbird 0.6.1
compiles and installs, but the user interface is completely scrambled.  It
works fine one my other machine, which is running 5.1-RELEASE.

I recently upgraded Gnome to 2.6 (using the special Gnome update script) on
the problem machine, so that I could compile OpenOffice.  Is it possible that
this is causing the problem?