Hello,
thanks for the answer, this looks good for sure.
The url inside your link, for the puredata.info page seems erased. But I did suppress the .plist file mentionned. I did not get to manually load the "libdir" library, but now at booting this is the log I get:

libdir loader $Revision: 1.8 $
written by Hans-Christoph Steiner <hans@at.or.at>
compiled on Jul 29 2008 at 04:03:05
compiled against Pd version 0.40.3.extended
GEM: Graphics Environment for Multimedia
GEM: ver: 0.91.1 'tigital'
GEM: compiled: Jul 29 2008
GEM: maintained by IOhannes m zmoelnig
GEM: Authors : Mark Danks (original version)
GEM: Chris Clepper
GEM: James Tittle
GEM: IOhannes m zmoelnig
GEM: with help by Guenter Geiger, Daniel Heckenberg, Cyrille Henry, et al.
GEM: found a bug? miss a feature? please report it:
GEM: homepage http://gem.iem.at/
GEM: bug-tracker http://sourceforge.net/projects/pd-gem/
GEM: mailing-list http://lists.puredata.info/listinfo/gem-dev/
GEM: compiled for SIMD architecture: AltiVec
GEM: using AltiVec optimization
libdir_loader: added 'cyclone' to the global objectclass path
libdir_loader: added 'zexy' to the global objectclass path
libdir_loader: added 'creb' to the global objectclass path
libdir_loader: added 'cxc' to the global objectclass path
libdir_loader: added 'iemlib' to the global objectclass path
libdir_loader: added 'list-abs' to the global objectclass path
libdir_loader: added 'mapping' to the global objectclass path
libdir_loader: added 'markex' to the global objectclass path
libdir_loader: added 'maxlib' to the global objectclass path
libdir_loader: added 'memento' to the global objectclass path
libdir_loader: added 'mjlib' to the global objectclass path
libdir_loader: added 'motex' to the global objectclass path
libdir_loader: added 'oscx' to the global objectclass path
libdir_loader: added 'pddp' to the global objectclass path
libdir_loader: added 'pdogg' to the global objectclass path
libdir_loader: added 'pixeltango' to the global objectclass path
libdir_loader: added 'pmpd' to the global objectclass path
libdir_loader: added 'rradical' to the global objectclass path
libdir_loader: added 'sigpack' to the global objectclass path
libdir_loader: added 'smlib' to the global objectclass path
libdir_loader: added 'toxy' to the global objectclass path
libdir_loader: added 'unauthorized' to the global objectclass path
libdir_loader: added 'pan' to the global objectclass path
libdir_loader: added 'freeverb' to the global objectclass path
libdir_loader: added 'hcs' to the global objectclass path
libdir_loader: added 'jmmmp' to the global objectclass path
libdir_loader: added 'ext13' to the global objectclass path
libdir_loader: added 'ggee' to the global objectclass path
libdir_loader: added 'flib' to the global objectclass path
libdir_loader: added 'ekext' to the global objectclass path
libdir_loader: added 'flatspace' to the global objectclass path
PDP: pure data packet version 0.12.5-darcs
[pdp_qt]: setting LIBQUICKTIME_PLUGIN_DIR to:
/Applications/Pd-extended.app/Contents/lib/libquicktime
PiDiP : additional video processing objects for PDP
version 0.12.22 ( ydegoyon@free.fr )
pdp_colorgrid: version 0.4
by Yves Degoyon (ydegoyon@free.fr) & Lluis Gomez i Bigorda (lluis@artefacte.org)

So I guess, it is ok now:)
thank you very much for your help,
gergely

Hello, gOOdnight,
yes, I have seen your post, but honestly, I do not exactly know where to start, I am ok as a music software person, but for more general computer issues I do not really have a clue. Also, I am not sure if your log exactly suits what I need, I am on a G4 Powerbook and OSX10.4.11.
So yes, any help is warmly appreciated, I'll keep looking, and also coming back to check here..
cheers,
gergely

Well, despite the successful installation of X11, my list of what all Pd cannot load is even longer than arif's:

GEM: Graphics Environment for Multimedia
GEM: ver: 0.91.1 'tigital'
GEM: compiled: Jul 29 2008
GEM: maintained by IOhannes m zmoelnig
GEM: Authors : Mark Danks (original version)
GEM: Chris Clepper
GEM: James Tittle
GEM: IOhannes m zmoelnig
GEM: with help by Guenter Geiger, Daniel Heckenberg, Cyrille Henry, et al.
GEM: found a bug? miss a feature? please report it:
GEM: homepage http://gem.iem.at/
GEM: bug-tracker http://sourceforge.net/projects/pd-gem/
GEM: mailing-list http://lists.puredata.info/listinfo/gem-dev/
GEM: compiled for SIMD architecture: AltiVec
GEM: using AltiVec optimization
cyclone: can't load library
zexy: can't load library
creb: can't load library
cxc: can't load library
iemlib: can't load library
list-abs: can't load library
mapping: can't load library
markex: can't load library
maxlib: can't load library
memento: can't load library
mjlib: can't load library
motex: can't load library
oscx: can't load library
pddp: can't load library
pdogg: can't load library
pixeltango: can't load library
pmpd: can't load library
rradical: can't load library
sigpack: can't load library
smlib: can't load library
toxy: can't load library
unauthorized: can't load library
pan: can't load library
freeverb: can't load library
hcs: can't load library
jmmmp: can't load library
ext13: can't load library
hardware: can't load library
deprecated: can't load library
flatspace: can't load library
iem_anything: can't load library

xsample objects, version 0.3.2pre

xrecord~, xplay~, xgroove~
(C)2001-2007 Thomas Grill

ggee: can't load library
flib: can't load library
mrpeach: can't load library
PDP: pure data packet version 0.12.5-darcs
[pdp_qt]: setting LIBQUICKTIME_PLUGIN_DIR to:
/Applications/Pd-extended.app/Contents/lib/libquicktime
PiDiP : additional video processing objects for PDP
version 0.12.22 ( ydegoyon@free.fr )
pdp_colorgrid: version 0.4
by Yves Degoyon (ydegoyon@free.fr) & Lluis Gomez i Bigorda (lluis@artefacte.org)

I'm a bit clueless here:/

Ok, the first hit for the google search was a good one:
http://cjmart.in/2006/12/01/install-x11-on-tiger-without-the-tiger-install-dvd/

done in 5 min:)

Hello..
arif, did you succeed to install X11 in the end?
I have the same problem, X11 installer tells me that newer software exists on the computer, but than it's also a complete mess with the file sizes (software requires 91.5MB, but elsewhere it says 24.7GB, so in the end of the day I just cannot even continue the installation..