An interesting security "feature"

The computers in this lab are secured in many ways, most typical like no Control Pannel. Here's one I've never seen before: I tried to right-click on a button in the Windows toolbar to close a program and I can't. The right-clicking anywhere on the desktop has been disabled. If I every find out why I'll let you know. Suggestions as to why this might be policy are welcome in comments.

04.27.04 Update:
Seems that the answer to this is that "it's a Gates thing." i.e. The Gates computers come set up that way and the folks here don't understand it either.