cpu0 unhandled rdmsr: 0x345

Hi,

we are comparing different products for our new servers. We really like Proxmox, but there is one problem that we are not even sure what does it mean.
Every time we try to run Debian graphical installation on VM, we get an error saying "cpu0 unhandled rdmsr: 0x345". It's happening only when CPU type is set to "host", which is supposed to be the fastest method.
What does this error message mean? Because everything is working correctly.
Our lab server is Dell PowerEdge T110 II. Proxmox is installed based on Debian Wheezy 7.3.0 according to this manual: http://pve.proxmox.com/wiki/Install_..._Debian_Wheezy

Thanks