Apply by doing:
	cd /usr/src
	patch -p0 < 002_vr.patch

Then build and install a new kernel.

Index: sys/dev/pci/if_vr.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/if_vr.c,v
retrieving revision 1.75
retrieving revision 1.75.2.1
diff -u -p -r1.75 -r1.75.2.1
--- sys/dev/pci/if_vr.c	24 Jul 2008 19:01:28 -0000	1.75
+++ sys/dev/pci/if_vr.c	2 Nov 2008 03:58:35 -0000	1.75.2.1
@@ -808,7 +808,8 @@ vr_rxeof(struct vr_softc *sc)
 		{
 			m0 = m_devget(mtod(m, caddr_t) - ETHER_ALIGN,
 			    total_len + ETHER_ALIGN, 0, ifp, NULL);
-			if (m0 == NULL || vr_alloc_mbuf(sc, cur_rx, m)) {
+			vr_alloc_mbuf(sc, cur_rx, m);
+			if (m0 == NULL) {
 				ifp->if_ierrors++;
 				continue;
 			}