I apologies for the garbled email.
Here is the log of the VB if you find this interesting
(https://docs.google.com/leaf?id=0B-zGkzsroPljMDdkNGZhOGYtNWZhNS00YzMxLTlhMzAtMDdjMjAxZWQxYWM2&hl=en_US&authkey=CITomq8E).

I looked on the VB's list server and it seemed to be an already known
problem, probably related to the recent update to 4.0.2 (of VB). I'll
update the thread as soon as more relevant information will be
available.
thank you
 Andrew

On Mon, May 23, 2011 at 9:36 PM, Andrew Z <[log in to unmask]> wrote:
> Hello,
> ill post on BB board too, but was thinking maybe someone enqountered same
> problem as me. Since yesterday my al 6 64 guest started hanging. No errors.
> Just hangs and it affects the vb main application to. I have not installed
> any updates to sl at all. the only thing that changed over last 2 weeks is
> upgrade of vb from version 4 to latest 401. The guest addons were not
> updated.
> Host is win 7 home premium on toshiba satellite.
> Thank you.
> Andrew
> --
> Sent from my Android phone with K-9 Mail. Please excuse my brevity.