chernan:/usr/src# cd linux-2.6.23.1
chernan:/usr/src/linux-2.6.23.1# make xconfig
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/basic/docproc
  CHECK   qt
  HOSTCC  scripts/kconfig/conf.o
sed < scripts/kconfig/lkc_proto.h > scripts/kconfig/lkc_defs.h 's/P(\([^,]*\),.*/#define \1 (\*\1_p)/'
  HOSTCC  scripts/kconfig/kconfig_load.o
  HOSTCC  scripts/kconfig/kxgettext.o
  SHIPPED scripts/kconfig/zconf.tab.c
  SHIPPED scripts/kconfig/lex.zconf.c
  SHIPPED scripts/kconfig/zconf.hash.c
  HOSTCC  scripts/kconfig/zconf.tab.o
/usr/bin/moc -i scripts/kconfig/qconf.h -o scripts/kconfig/qconf.moc
  HOSTCXX scripts/kconfig/qconf.o
  HOSTLD  scripts/kconfig/qconf
scripts/kconfig/qconf arch/i386/Kconfig
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

qconf: cannot connect to X server :0
make[1]: *** [xconfig] Error 1
make: *** [xconfig] Error 2
chernan:/usr/src/linux-2.6.23.1#