When I login using GNOME on my recently installed RH 6.2, I always get an
.xsession-error file, which looks suspicious. Always the first line is:

/etc/X11/xdm/Xsession: [: too many arguments

I have tried to manually trace Xsession, but have not been able to detect
any syntactical errors in it, or in files referred to in Xsession. When
using GNOME the next two lines, which do not seem to be related to the
first error message:

SESSION_MANAGER=local/knuth:/tmp/.ICE-unix/1728,tcp/knuth:1087
subshell.c: couldn't get terminal settings: Inappropriate ioctl for device
rm: cannot remove `/users/plucas/.gnome//gmc-eJ0kRS': No such file or
directory

Again, it is not clear to me where this message comes from, but it seems
to be generated by GNOME. However, the first message worries me most.