When using the IE driver with IE9, occasionally the Click method will only select a button, it wont do the action of the Click(). Note this only happens occasionally, so i d
Try setting Internet Options -> Security -> Enable Protected Mode to the same setting for all zones, see http://www.mail-archive.com/watir-general@googlegroups.com/msg13482.html. This is from the Watir googlegroup, but in my Selenium 2 tests IE button clicks seem to work better after applying this.