In /etc/X11/AnotherLevel/fvwm2rc.defines.m4, the line: define(`MAIL_SPOOL_DIR',`/var/spool/mail/'`'USER) should be: define(`MAIL_SPOOL_DIR',`/var/spool/mail/'`USER') The result of the current code, which has persisted since RH5.0 at least, is that the little envelope that should appear at the far right edge of the taskbar when you have mail never appears.
Thi s is not a bug. It needs to be entered as it is to work properly.Basically what happens is USER is replaced with whatever the user name is that started the windowmanager, thus the need for the single quotes to be positioned the way they are. If you enter it the way you have it some functionality is lost.