kvm "tablet" device burning cpu cycles

[Dennis Jacobfeuerborn]

Hi,
I noticed that when you install a virtual system with virt-manager it 
always installs a tablet device by default.
The problem is that this device consumes 10% of cpu resources of the host 
according to "top" which should probably be considered a bug.

What is worse is that removing the tablet also means no mouse pointer 
showing up in a centos 6 guest which means you are pretty much forced to 
use the tablet device.

Given that Fedora has cared about power usage in the past this looks like 
something that should be fixed.

Regards,
   Dennis