Microsoft granted patent on button click timing. http://computerworld.co.nz/news.nsf/NL/A05F9C5244A45A33CC256EA800334950 I must have missed the US patent office decision to exclude prior art from consideration in granting US patents -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu