On 09.04.2008 Davide D'Amico wrote:
> I have a Windows 2003 32 bit guest that hangs up (i.e. not responding anymore)

Hi Davide,

I had very similar problems (details in [1]) which were solved by upgrading to host's kernel to 2.6.25.
Since then all guests including the Win 2003 Servers are rock-solid, even under heavy load.

regards,
Felix

[1] http://www.mail-archive.com/kvm-devel@lists.sourceforge.net/msg14784.html