--- VirtualBox-3.1.2_OSE.orig/Config.kmk	2009-12-17 15:23:04.000000000 +0100
+++ VirtualBox-3.1.2_OSE.orig/Config.kmk	2010-01-23 18:12:28.000000000 +0100
@@ -215,9 +215,9 @@ 
 endif
 # Build the optional ring-0 part of the additions for syntax checking.
 # (Except when cross-building on linux since we're using /usr/src/...)
-ifn1of ($(KBUILD_TARGET).$(KBUILD_HOST_ARCH).$(KBUILD_TARGET_ARCH), linux.x86.amd64 linux.amd64.x86)
- VBOX_WITH_ADDITION_DRIVERS = 1
-endif
+#ifn1of ($(KBUILD_TARGET).$(KBUILD_HOST_ARCH).$(KBUILD_TARGET_ARCH), linux.x86.amd64 linux.amd64.x86)
+# VBOX_WITH_ADDITION_DRIVERS = 1
+#endif
 # Build X11 additions. Can be disabled separately.
 if1of ($(KBUILD_TARGET), dragonfly freebsd linux netbsd openbsd solaris)
  VBOX_WITH_X11_ADDITIONS = 1