error while updating ports: x11/xorg-libraries

[Huub]

> 
> First off, you should probably update your ports tree. Firefox is now
> at 2.0.0.11,1, and xorg-libraries is at 7.3_1.

I started with updating the ports tree.

> 
> Then try the upgrade again. If it still fails, show us the errors from
> the xorg-libraries build.

[Updating the pkgdb <format:bdb_btree> in /var/db/pkg ... - 685 packages 
found (-0 +1) . done]
--->  Upgrading 'xorg-libraries-7.2_1' to 'xorg-libraries-7.3_1' 
(x11/xorg-libraries)
--->  Building '/usr/ports/x11/xorg-libraries'
===>  Cleaning for xorg-libraries-7.3_1
/usr/X11R6 exists, but it is not a symlink. Installation cannot proceed.
This looks like an incompletely removed old version of X.  In the 
current version, /usr/X11R6 must be a symlink if it exists at all.Please 
read /usr/ports/UPDATING (entry of 20070519) for the procedure to 
upgrade X.org related ports.*** Error code 1

Stop in /usr/ports/x11/xorg-libraries.
** Command failed [exit code 1]: /usr/bin/script -qa 
/tmp/portupgrade.15405.6 env UPGRADE_TOOL=portupgrade 
UPGRADE_PORT=xorg-libraries-7.2_1 UPGRADE_PORT_VER=7.2_1 make
** Fix the problem and try again.

------------------------------------

OK, so it looks like I have to update Xorg ports first. Reading UPDATING 
it seems quite a lot of work. Can you tell it will work out ok?