xorg-libxkbui installation problem / general X11 question

[Lars Sonchocky-Helldorf]

Hi,

when doing an 'sudo port -v upgrade outdated' I got a failure for  
xorg-libxkbui which I have attached:

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my environment (a PowerBook G4):

Lars-Sonchocky-Helldorfs-Computer:~ lars$ uname -a
Darwin Lars-Sonchocky-Helldorfs-Computer.local 8.11.0 Darwin Kernel  
Version 8.11.0: Wed Oct 10 18:26:00 PDT 2007; root:xnu-792.24.17~1/ 
RELEASE_PPC Power Macintosh powerpc
Lars-Sonchocky-Helldorfs-Computer:~ lars$ port version
Version: 1.8.0



What makes me wonder here is why macports tries to install X11/Xorg  
at all, given I already have installed X11.app from Apple. Is this  
the case because the X11.app from Apple is to old (I got version  
1.1.3) or because it is incompatible or not detected? I'd rather use  
Apple's X11.app (because it works and I have no problems installing  
it) but if this is not sufficient please let me know.


thanks,

	Lars