diff -ruN zaptel-1.4.11-original/Makefile zaptel-1.4.11/Makefile
--- zaptel-1.4.11-original/Makefile	2008-05-13 20:01:28.000000000 +0200
+++ zaptel-1.4.11/Makefile	2008-06-04 17:21:46.000000000 +0200
@@ -66,20 +66,32 @@
 # Set HOTPLUG_FIRMWARE=no to override automatic building with hotplug support
 # if it is enabled in the kernel.
 ifeq ($(BUILDVER),linux26)
-  ifneq (,$(wildcard $(DESTDIR)/etc/udev/rules.d))
-    DYNFS=yes
-    UDEVRULES=yes
-  endif
+#  ifneq (,$(wildcard $(DESTDIR)/etc/udev/rules.d))
+#    DYNFS=yes
+#    UDEVRULES=yes
+#  endif
   ifeq (yes,$(HAS_KSRC))
     HOTPLUG_FIRMWARE:=$(shell if grep -q '^CONFIG_FW_LOADER=[ym]' $(KCONFIG); then echo "yes"; else echo "no"; fi)
   endif
 endif
 
-ifneq (,$(findstring $(CONFIG_DEVFS_FS),y m))
-  DYNFS=yes
-  HAS_DEVFS=yes
+#ifneq (,$(findstring $(CONFIG_DEVFS_FS),y m))
+#  DYNFS=yes
+#  HAS_DEVFS=yes
+#endif
+
+# This is not related to the version that we build. Rather, to the 
+# version that we runs. If we build for 2.4 using 2.4 headers on a 2.6
+# system with udev mounted on /dev , no point in installing files to /dev
+# because they'll be wiped at next reboot. XXX: should this be a use-flag? Perhaps: noudev?
+DYNFS:=$(shell ps ax | grep -v grep | grep -qw 'devfsd\|udevd' && echo "yes")
+
+# Check for udev rules directories
+ifneq (,$(wildcard $(ROOT_PREFIX)/etc/udev/rules.d))
+  UDEVRULES=yes
 endif
 
+
 # If the file .zaptel.makeopts is present in your home directory, you can
 # include all of your favorite menuselect options so that every time you download
 # a new version of Asterisk, you don't have to run menuselect to set them.
@@ -153,7 +165,7 @@
   ALL_MODULES+=$(patsubst %,xpp/%.ko,xpp_usb xpd_fxo xpd_fxs xpp)
 endif
 
-OPTFLAG=-O2
+OPTFLAGS?=-O2
 CFLAGS+=-I. $(OPTFLAGS) -g -fPIC -Wall -DBUILDING_TONEZONE #-DTONEZONE_DRIVER
 ifneq (,$(findstring ppc,$(UNAME_M)))
 CFLAGS_PPC:=-fsigned-char
@@ -162,7 +174,7 @@
 CFLAGS_x86_64:=-m64
 endif
 CFLAGS+=$(CFLAGS_PPC) $(CFLAGS_x86_64)
-KFLAGS=-I$(KINCLUDES) -O6
+KFLAGS=-I$(KINCLUDES) -O2
 KFLAGS+=-DMODULE -D__KERNEL__ -DEXPORT_SYMTAB -I$(KSRC)/drivers/net \
 	-Wall -I. -Wstrict-prototypes -fomit-frame-pointer -I$(KSRC)/drivers/net/wan -I$(KINCLUDES)/net
 ifneq (,$(wildcard $(KINCLUDES)/linux/modversions.h))
@@ -425,7 +437,7 @@
 $(UTILSO): %.o: %.c
 	$(CC) $(CFLAGS) -o $@ -c $<
 
-install: all devices install-modules install-programs install-firmware
+install: devices install-modules install-programs install-firmware
 	@echo "###################################################"
 	@echo "###"
 	@echo "### Zaptel installed successfully."
@@ -450,10 +462,8 @@
 
 # Pushing those two to a separate target that is not used by default:
 install-modconf:
-	build_tools/genmodconf $(BUILDVER) "$(ROOT_PREFIX)" "$(filter-out zaptel ztdummy xpp zttranscode ztdynamic,$(BUILD_MODULES)) $(MODULE_ALIASES)"
-	@if [ -d /etc/modutils ]; then \
-		/sbin/update-modules ; \
-	fi
+	install -d -m 755 $(DESTDIR)/etc/modules.d
+	build_tools/genmodconf $(BUILDVER) "$(DESTDIR)" "$(filter-out zaptel ztdummy xpp zttranscode ztdynamic,$(BUILD_MODULES)) $(MODULE_ALIASES)"
 
 install-firmware:
 ifeq ($(HOTPLUG_FIRMWARE),yes)
@@ -463,11 +473,9 @@
 install-libs: libs
 	$(INSTALL) -D -m 755 $(LTZ_A) $(DESTDIR)$(LIB_DIR)/$(LTZ_A)
 	$(INSTALL) -D -m 755 $(LTZ_SO) $(DESTDIR)$(LIB_DIR)/$(LTZ_SO).$(LTZ_SO_MAJOR_VER).$(LTZ_SO_MINOR_VER)
-ifeq (,$(DESTDIR))
 	if [ `id -u` = 0 ]; then \
-		/sbin/ldconfig || : ;\
+		/sbin/ldconfig -n $(DESTDIR)$(LIB_DIR) || : ;\
 	fi
-endif
 	rm -f $(DESTDIR)$(LIB_DIR)$(LTZ_SO)
 	$(LN) -sf $(LTZ_SO).$(LTZ_SO_MAJOR_VER).$(LTZ_SO_MINOR_VER) \
 		$(DESTDIR)$(LIB_DIR)/$(LTZ_SO).$(LTZ_SO_MAJOR_VER)
@@ -516,7 +524,8 @@
 	@echo "**** Dynamic filesystem detected -- not creating device nodes"
   else # UDEVRULES
 	install -d $(DESTDIR)/etc/udev/rules.d
-	build_tools/genudevrules > $(DESTDIR)/etc/udev/rules.d/zaptel.rules
+	build_tools/genudevrules > zaptel.rules
+	install -D -m 644 zaptel.rules $(DESTDIR)/etc/udev/rules.d/10-zaptel.rules
   endif
 endif
 
@@ -531,14 +540,14 @@
 endif
 
 ifeq ($(BUILDVER),linux24)
-install-modules: $(INSTALL_MODULES) uninstall-modules
+install-modules: $(INSTALL_MODULES)
 	$(INSTALL) -d $(DESTDIR)$(MOD_DIR)
 	$(INSTALL) -m 644 $(INSTALL_MODULES) $(DESTDIR)$(MOD_DIR)
 else
-install-modules: uninstall-modules
+install-modules:
 	$(KMAKE_INST)
 endif
-	[ `id -u` = 0 ] && /sbin/depmod -a $(KVERS) || :
+	[ -z "$(DESTDIR)" -a `id -u` = 0 ] && /sbin/depmod -a $(KVERS) || :
 
 config:
 ifneq (,$(COPY_INITD))
diff -ruN zaptel-1.4.11-original/build_tools/genmodconf zaptel-1.4.11/build_tools/genmodconf
--- zaptel-1.4.11-original/build_tools/genmodconf	2007-07-11 21:04:58.000000000 +0200
+++ zaptel-1.4.11/build_tools/genmodconf	2008-06-04 17:20:38.000000000 +0200
@@ -79,20 +79,6 @@
 
 echo Building ${target}...
 
-if [ "${1}" = "linux24" ]; then
-    for mod in ${3}; do
-	if ! grep -q "post-install ${mod} " ${target}; then
-	    echo "post-install ${mod} /sbin/ztcfg" >> ${target}
-	fi
-    done
-elif [ "${1}" = "linux26" ]; then
-    for mod in ${3}; do
-	if ! grep -q "install ${mod} " ${target}; then
-	    echo "install ${mod} /sbin/modprobe --ignore-install ${mod} ${cmdopts} && /sbin/ztcfg" >> ${target}
-	fi
-    done
-fi
-
 if [ -z "${combined}" ]; then
     echo "***"
     echo "*** WARNING:"
diff -ruN zaptel-1.4.11-original/build_tools/genudevrules zaptel-1.4.11/build_tools/genudevrules
--- zaptel-1.4.11-original/build_tools/genudevrules	2008-03-26 09:45:25.000000000 +0100
+++ zaptel-1.4.11/build_tools/genudevrules	2008-06-04 17:20:38.000000000 +0200
@@ -31,5 +31,5 @@
 KERNEL${match}"zap[0-9]*", NAME="zap/%n"
 
 # zaptel devices with ownership/permissions for running as non-root
-SUBSYSTEM${match}"zaptel",  OWNER="asterisk", GROUP="asterisk", MODE="0660"
+SUBSYSTEM${match}"zaptel",  OWNER="asterisk", GROUP="dialout", MODE="0660"
 EOF