there is a SLES11SP4 with Std.-GUI (GNOME2?) which is a virt. host in a
KVM hypervisor.

Unfortunately I have a (dynamic) offset when using the mouse in the
KVM-Manager (Spice / VNC) So I have to try to much to pick up an icon.
(OK, normally the GUI is not needed, but this is ugly when you show this
to someone.)

Are help full hints available?