gicmo@picco ~ %  strace -e open python -c "import pygtk" 2>&1 | grep pygtk
open("pygtk.so", O_RDONLY|O_LARGEFILE)  = -1 ENOENT (No such file or directory)
open("pygtkmodule.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("pygtk.py", O_RDONLY|O_LARGEFILE)  = -1 ENOENT (No such file or directory)
open("pygtk.pyc", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python24.zip/pygtk.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python24.zip/pygtkmodule.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python24.zip/pygtk.py", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python24.zip/pygtk.pyc", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/pygtk.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/pygtkmodule.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/pygtk.py", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/pygtk.pyc", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/plat-linux2/pygtk.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/plat-linux2/pygtkmodule.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/plat-linux2/pygtk.py", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/plat-linux2/pygtk.pyc", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/lib-tk/pygtk.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/lib-tk/pygtkmodule.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/lib-tk/pygtk.py", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/lib-tk/pygtk.pyc", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/lib-dynload/pygtk.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/lib-dynload/pygtkmodule.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/lib-dynload/pygtk.py", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/lib/python2.4/lib-dynload/pygtk.pyc", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
ImportError: No module named pygtk