diff --git a/emulators/virtualbox-ose-kmod/Makefile b/emulators/virtualbox-ose-kmod/Makefile
index 20fd1a844e14..12d782482868 100644
--- a/emulators/virtualbox-ose-kmod/Makefile
+++ b/emulators/virtualbox-ose-kmod/Makefile
@@ -7,7 +7,7 @@
 
 PORTNAME=	virtualbox-ose
 DISTVERSION=	4.0.12
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	emulators kld
 MASTER_SITES=	http://tmp.chruetertee.ch/ \
 		http://freebsd.unixfreunde.de/sources/ \
diff --git a/emulators/virtualbox-ose-kmod/files/patch-src-VBox-HostDrivers-Support-freebsd-SUPDrv-freebsd.c b/emulators/virtualbox-ose-kmod/files/patch-src-VBox-HostDrivers-Support-freebsd-SUPDrv-freebsd.c
new file mode 100644
index 000000000000..9f891907b92d
--- /dev/null
+++ b/emulators/virtualbox-ose-kmod/files/patch-src-VBox-HostDrivers-Support-freebsd-SUPDrv-freebsd.c
@@ -0,0 +1,13 @@
+--- src/VBox/HostDrivers/Support/freebsd/SUPDrv-freebsd.c.orig	2011-11-04 07:19:39.000000000 -0400
++++ src/VBox/HostDrivers/Support/freebsd/SUPDrv-freebsd.c	2011-11-29 17:34:56.000000000 -0500
+@@ -100,7 +100,9 @@
+ static struct cdevsw        g_VBoxDrvFreeBSDChrDevSW =
+ {
+     .d_version =        D_VERSION,
+-#if __FreeBSD_version > 800061
++#if __FreeBSD_version >= 1000000
++    .d_flags =          D_TRACKCLOSE | D_NEEDMINOR,
++#elif __FreeBSD_version > 800061
+     .d_flags =          D_PSEUDO | D_TRACKCLOSE | D_NEEDMINOR,
+ #else
+     .d_flags =          D_PSEUDO | D_TRACKCLOSE,
diff --git a/emulators/virtualbox-ose-kmod/files/patch-src-VBox-Runtime-r0drv-freebsd-memobj-r0drv-freebsd.c b/emulators/virtualbox-ose-kmod/files/patch-src-VBox-Runtime-r0drv-freebsd-memobj-r0drv-freebsd.c
index fd376f9b528b..91bacd4eef20 100644
--- a/emulators/virtualbox-ose-kmod/files/patch-src-VBox-Runtime-r0drv-freebsd-memobj-r0drv-freebsd.c
+++ b/emulators/virtualbox-ose-kmod/files/patch-src-VBox-Runtime-r0drv-freebsd-memobj-r0drv-freebsd.c
@@ -5,9 +5,13 @@ to VPO_UNMANAGED for an additional assert.
 
 Reviewed by:	kib
 See:		http://svnweb.freebsd.org/base?view=revision&revision=224746
---- src/VBox/Runtime/r0drv/freebsd/memobj-r0drv-freebsd.c.orig	2011-04-05 14:34:09.000000000 +0200
-+++ src/VBox/Runtime/r0drv/freebsd/memobj-r0drv-freebsd.c	2011-08-11 15:06:46.000000000 +0200
-@@ -394,9 +394,13 @@
+--- src/VBox/Runtime/r0drv/freebsd/memobj-r0drv-freebsd.c.orig	2011-11-04 07:19:54.000000000 -0400
++++ src/VBox/Runtime/r0drv/freebsd/memobj-r0drv-freebsd.c	2011-11-29 18:13:32.000000000 -0500
+@@ -391,12 +391,18 @@
+ 
+ static void rtR0MemObjFreeBSDPhysPageInit(vm_page_t pPage, vm_pindex_t iPage)
+ {
++#if __FreeBSD_version <= 1000000
      pPage->wire_count = 1;
      pPage->pindex     = iPage;
      pPage->act_count  = 0;
@@ -19,7 +23,42 @@ See:		http://svnweb.freebsd.org/base?view=revision&revision=224746
 +    Assert(pPage->oflags & VPO_UNMANAGED != 0);
 +#else
 +    Assert(pPage->flags & PG_UNMANAGED != 0);
++#endif
 +#endif
  }
  
  
+@@ -408,6 +414,9 @@
+     int        rc = VINF_SUCCESS;
+     uint32_t   cPages = cb >> PAGE_SHIFT;
+     vm_paddr_t VmPhysAddrHigh;
++#if __FreeBSD_version >= 1000001
++    int        pFlags = VM_ALLOC_INTERRUPT | VM_ALLOC_NOOBJ | VM_ALLOC_WIRED;
++#endif
+ 
+     /* create the object. */
+     PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJFREEBSD, u.Phys.apPages[cPages]),
+@@ -424,7 +433,11 @@
+ 
+     if (fContiguous)
+     {
++#if __FreeBSD_version >= 1000001
++        vm_page_t pPage = vm_page_alloc_contig(NULL, 0, pFlags, cPages, 0, VmPhysAddrHigh, uAlignment, 0, VM_MEMATTR_DEFAULT);
++#else
+         vm_page_t pPage = vm_phys_alloc_contig(cPages, 0, VmPhysAddrHigh, uAlignment, 0);
++#endif
+ 
+         if (pPage)
+             for (uint32_t iPage = 0; iPage < cPages; iPage++)
+@@ -440,7 +453,11 @@
+         /* Allocate page by page */
+         for (uint32_t iPage = 0; iPage < cPages; iPage++)
+         {
++#if __FreeBSD_version >= 1000001
++            vm_page_t pPage = vm_page_alloc_contig(NULL, iPage, pFlags, 1, 0, VmPhysAddrHigh, uAlignment, 0, VM_MEMATTR_DEFAULT);
++#else
+             vm_page_t pPage = vm_phys_alloc_contig(1, 0, VmPhysAddrHigh, uAlignment, 0);
++#endif
+ 
+             if (!pPage)
+             {