barney,
> Is there any way to override the display of these messages? I would
> really prefer that all plain text messages use my preferred fixed font
> and size, but I suppose there may be some technical issues with 1-byte
> vs 2-byte charsets. So if this is not possible, is there a way to get
> these messages to use the preferred variable width size along with the font?
See http://www.mozilla.org/unix/customizing.html
There is no UI to do this yet. See
http://bugzilla.mozilla.org/show_bug.cgi?id=30896
-Seth