virtio-net crashing (stop sending traffic)

I'm in the #kvm channel on freenode and have been experiencing the same issue. I thought it was virtio-blk (disk). I was told there was a patch submitted to trunk on Feb 8 to kvm. Here is the information I gathered from mjt.

Issue described: http://www.mail-archive.com/kvm@vger.kernel.org/msg26033.html
Issue patched: http://marc.info/?l=kvm&m=126564542625725&w=2
here is the conversation I had on irc http://pastebin.com/ZX4pVmZB
here is the git comment: 06b1297017415ae6a07a0e97ad7d8e90b2d95823
it is patched in qemu-kvm 0.12.3
 
I haven't tried it with other network interfaces, only virtio, but from what I could gather, the race condition only happens when there is a bunch of network activity from a bunch of different nodes.
 
then ... I must to use rtl3189. Are there e1000 upgrades?

pve-manager: 1.5-8 (pve-manager/1.5/4674)
running kernel: 2.6.18-2-pve
proxmox-ve-2.6.18: 1.5-5
pve-kernel-2.6.18-2-pve: 2.6.18-5
qemu-server: 1.1-11
pve-firmware: 1.0-3
libpve-storage-perl: 1.0-10
vncterm: 0.9-2
vzctl: 3.0.23-1pve8
vzdump: 1.2-5
vzprocps: 2.0.11-1dso2
vzquota: 3.0.11-1
pve-qemu-kvm-2.6.18: 0.9.1-5
 
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