Virtualbox deadlocks on starting guest

[hiren panchasara]

Hi all,

I have:

flymockour-l7% uname -a
FreeBSD flymockour-l7.corp.yahoo.com 10.0-CURRENT FreeBSD 10.0-CURRENT
#4 r252757M: Thu Jul  4 23:06:03 PDT 2013
root at flymockour-l7.corp.yahoo.com:/usr/obj/usr/home/hirenp/head/sys/GENERIC
 amd64
flymockour-l7%
flymockour-l7% pkg info | grep -i virtualbox
virtualbox-ose-4.2.14_1        A general-purpose full virtualizer for
x86 hardware
virtualbox-ose-kmod-4.2.14     VirtualBox kernel module for FreeBSD
flymockour-l7%
flymockour-l7% groups
wheel operator vboxusers fuse

flymockour-l7% kldstat | grep -i vbox
12    1 0xffffffff82a60000 519b8    vboxdrv.ko
flymockour-l7% kldstat | grep -i vmm
11    1 0xffffffff828dd000 182c50   vmm.ko
flymockour-l7%

I start virtualbox as myself (not root) from cli and whenever I try to
launch any guest (be it freebsd, ubuntu or windows) laptop deadlocks
right away and I have to hard reset.

This has been happening for many months but now I have decided to sit
down and fix it.

I believe I am missing something simple as I do not see any other such reports.

cheers,
Hiren