diff --git a/virtualbox-guest-preamble b/virtualbox-guest-preamble
index 34d78f9..42724b2 100644
--- a/virtualbox-guest-preamble
+++ b/virtualbox-guest-preamble
@@ -1,5 +1,8 @@
 Requires: kernel-%1
 Provides: virtualbox-guest-kmp = %version
 #rename from ose version:
-Provides:  virtualbox-ose-guest-kmp-%1 = %version
+Provides: virtualbox-ose-guest-kmp-%1 = %version
 Obsoletes: virtualbox-ose-guest-kmp-%1 < %version
+#host (vboxdrv) and guest (vboxguest) kmp exports the same symbol (RTMemFreeEx)
+#which break loading modules using modprobe (bnc#661740)
+Conflicts: virtualbox-ose-host-kmp
diff --git a/virtualbox-host-preamble b/virtualbox-host-preamble
index 7dea019..1420a5e 100644
--- a/virtualbox-host-preamble
+++ b/virtualbox-host-preamble
@@ -3,3 +3,6 @@ Provides: virtualbox-host-kmp = %version
 #rename from ose version:
 Provides: virtualbox-ose-host-kmp-%1 = %version
 Obsoletes: virtualbox-ose-host-kmp-%1 < %version
+#host (vboxdrv) and guest (vboxguest) kmp exports the same symbol (RTMemFreeEx)
+#which break loading modules using modprobe (bnc#661740)
+Conflicts: virtualbox-ose-guest-kmp
diff --git a/virtualbox.changes b/virtualbox.changes
index 1497672..96098e1 100644
--- a/virtualbox.changes
+++ b/virtualbox.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Fri Mar 25 07:42:21 UTC 2011 - mseben@gmail.com
+
+- added Conflicts: virtualbox-ose-*-kmp for kmp packages, because
+  host (vboxdrv) and  guest (vboxguest) kmp exports the same 
+  symbol (RTMemFreeEx) which breaks loading modules using 
+  modprobe (bnc#661740)
+
 -------------------------------------------------------------------
 Thu Mar 17 13:17:54 UTC 2011 - mseben@gmail.com
 
diff --git a/virtualbox.spec b/virtualbox.spec
index effb226..80146ad 100644
--- a/virtualbox.spec
+++ b/virtualbox.spec
@@ -1,7 +1,7 @@
 #
-# spec file for package virtualbox
+# spec file for package virtualbox (Version 3.9.80)
 #
-# Copyright (c) 2011 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2010 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -32,7 +32,7 @@ BuildRequires:  e2fsprogs-devel libcap-devel libcurl-devel python-devel update-d
 BuildRequires:  hal-devel pulseaudio-devel xorg-x11 xorg-x11-devel xorg-x11-server xorg-x11-server-sdk
 BuildRequires:  LibVNCServer-devel gcc43-c++ kbuild pam-devel udev
 %if %suse_version > 1110  
-BuildRequires:  zlib-devel-static
+BuildRequires:  zlib-devel-static  
 %endif
 %ifarch amd64 x86_64 ia32e em64t
 BuildRequires:  hal-32bit
@@ -43,7 +43,7 @@ BuildRequires:  gcc43-32bit libstdc++43-devel-32bit
 #
 ExclusiveArch:  %ix86 x86_64
 Version:        4.0.4
-Release:        3
+Release:        1
 Summary:        VirtualBox is an Emulator
 License:        GPLv2+
 Group:          System/Emulators/PC
@@ -92,7 +92,7 @@ Patch99:        vbox-permissions_warning.diff
 Patch100:       vbox-no-build-dates.diff
 Patch101:       vbox-default-os-type.diff
 #disable update in vbox gui
-Patch102:       vbox-disable-updates.diff
+Patch102:         vbox-disable-updates.diff
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 PreReq:         pwdutils permissions
 Requires:       %{name}-host-kmp = %version
@@ -176,7 +176,6 @@ VirtualBox guest addition tools.
 ###########################################
 %package -n python-%{name}
 
-
 Summary:        Python bindings for %{name}
 Group:          Development/Libraries/Python
 Requires:       %{name} = %{version}
@@ -443,6 +442,7 @@ popd
 #install wrapper script
 %__install -m 644 %{S:9} 			%{buildroot}%{_bindir}/VirtualBox
 
+
 # modify and install the vboxdrv init script
 # TODO: some of this stuff breaks the fillup macros below? 
 %__sed -i "s|%NOLSB%|yes|g;s|%DEBIAN%||g;s|%PACKAGE%|virtualbox|g" src/VBox/Installer/linux/vboxdrv.sh.in
@@ -457,6 +457,8 @@ popd
 %__install -d -m 755 				%{buildroot}%{_var}/adm/fillup-templates
 install -m 700 %{S:13} 				%{buildroot}%{_var}/adm/fillup-templates/sysconfig.vbox
 
+
+
 ######################################################
 echo "entrering python-virtualbox install section"
 ######################################################
@@ -510,6 +512,7 @@ groupadd -r vboxusers 2>/dev/null || :
 	%run_permissions
 %endif	
 
+
 %verifyscript
 %if %suse_version >=1140
 	%verify_permissions -e %{_vbox_instdir}/VBoxNetDHCP
@@ -542,6 +545,7 @@ exit 0
 %restart_on_update vboxadd
 %insserv_cleanup
 
+
 %clean
 [ -d "%{buildroot}" -a "%{buildroot}" != "" ] && %__rm -rf "%{buildroot}"
 
@@ -616,7 +620,6 @@ exit 0
 %verify(not mode) %attr(0755,root,vboxusers) %{_vbox_instdir}/VBoxHeadless
 %verify(not mode) %attr(0755,root,vboxusers) %{_vbox_instdir}/VBoxSDL
 #
-
 %files qt
 %defattr(-, root, root)
 %{_vbox_instdir}/VBoxPermissionMessage