Not sure if this is a SPICE problem or a different problem that affects SPICE while libvirt shuts down.

Twice in a week, libvirt has shutdown a Windows XP guest with the following log entries for the Guest. Other entries before it are all normal.

dispatch_vdi_port_data: invalid port
qemu-kvm: spice-qemu-char.c:141: spice_chr_write: Assertion `s->datalen == 0'
failed.
2011-12-30 06:37:49.956+0000: shutting down

The entries before that are all normal entries.

The assertion failure may be the cause or a consequence of the real problem that makes libvirt shutdown guest (presumably because it thinks guest has died or gone away with no monitor connection).

Problem is I have no idea how to reproduce this, since it seems to happen during regular use and after as much as a week of continuous uptime. As far as I can see, there is no particular action in the user client that causes this. It is not the guest going to sleep or hibernation (both of which have been disabled). 

This started to happen only after updating to v1.0 KVM, 0.10 spice. Had no problem like this for a year or so of continuous use going all the way back to 0.8.

System: Opensuse 11.4
kvm-1.0-129.6.x86_64
libspice-server1-0.10.0-25.1.x86_64
spice-client-0.10.0-25.1.x86_64

libvirt-0.9.8-185.3.x86_64