davcon by smaller do you mean the height of the keys? and a4rocks, i installed the latest drivers but it seemed to make the problem only worse. when i uninstalled them completely i had no problems at all.
The keys are similiar to the Lycosa(height wise) but the X4 is dimensionally compact.
Thus some of the keys are slightly smaller and the layout has a few changes as opposed to the conventional kb layout.
I like it though it's a good kb if you find it cheap like i did.