Windows XP/2k3 not allocating memory may be after pve upgrade

[sgargel]

I'm not sure if this is consequential of the proxmox upgrade but my Windows guests do not allocate correctly the RAM.
The amount of ram is recognized (2GB) but guests wont use more than 512 MB. Strangely PVE Summary (the RRDtools graph) display that whole RAM is being used.

I've tried to disable ballooning by adding "balloon: 0" to VMID.conf, guest starts without balloning but the situation has not changed.

Any hints ?

This is my pve version:

root@lnxvt08:~# pveversion -v
pve-manager: 2.3-13 (pve-manager/2.3/7946f1f1)
running kernel: 2.6.32-19-pve
proxmox-ve-2.6.32: 2.3-96
pve-kernel-2.6.32-16-pve: 2.6.32-82
pve-kernel-2.6.32-19-pve: 2.6.32-96
lvm2: 2.02.95-1pve2
clvm: 2.02.95-1pve2
corosync-pve: 1.4.4-4
openais-pve: 1.1.4-2
libqb: 0.10.1-2
redhat-cluster-pve: 3.1.93-2
resource-agents-pve: 3.9.2-3
fence-agents-pve: 3.1.9-1
pve-cluster: 1.0-36
qemu-server: 2.3-20
pve-firmware: 1.0-21
libpve-common-perl: 1.0-49
libpve-access-control: 1.0-26
libpve-storage-perl: 2.3-7
vncterm: 1.0-4
vzctl: 4.0-1pve2
vzprocps: 2.0.11-2
vzquota: 3.1-1
pve-qemu-kvm: 1.4-10
ksm-control-daemon: 1.1-1
root@lnxvt08:~# uname -a
Linux lnxvt08 2.6.32-19-pve #1 SMP Mon Mar 18 06:41:32 CET 2013 x86_64 GNU/Linux

 

[sgargel]

Really no one has any suggestions ? It 'an unfortunate situation that makes windows guests unusable.