[Squeakland] install problem

I've installed squeak successfully on a set of laptops from a ghost image and it works fine on all except one. On this computer when I open squeak I immediately get handles displayed in the corners of the world and the label "world" and the program is non-responsive, although it will close. It's obviously opening in some state in which the world is an object, but why? And why only on this one computer? I tried re-installing Squeak from the web site but it didn't help. If anyone has seen this before, I'd appreciate your insights. Thanks, Erik Nauman MS Technology Coordinator The Hewitt School