The default mouse click behavior was changed to double-click a long time ago in this patch: http://www.trinitydesktop.org/patches/1284792137:5ec667408632981bb995a8af480429469d19d756.diff Checking the affected 3.5.13 header file shows the change is good with no regressions. I also have my own default global $PREFIX/share/config/kdeglobals file that has SingleClick=false. The file does get installed and the setting is the same. When I create a new profile through the KPersonalizer wizard the default becomes single-click. When I skip the KPersonalizer wizard then the default is double-click. Therefore something in the KPersonalizer process is overriding the system defaults. Would somebody please confirm this behavior? Thanks. Darrell