Hi
I know I've mentioned this before, but if you use wireless networks in your educational organisation, you really should read this page.
http://www.frontline-technology.com/patent_explain.html
Just to whet your appetite, here's an excerpt from their FAQ:
Q. "If I use a spreadsheet to collect student grades over the radio [network], should this be licensed under the patent?"
A. "Yes"
Be concerned...
Regards
Chris Puttick
IT Manager
Central Manchester City Learning Centre
+44 (0)161 212 1972