Single click registered as double click in F17

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http://forums.fedoraforum.org – Hi , Ever since I upgraded to Fedora 17 from Fedora 14, single clicking my mouse has become very difficult. Single click registers as a double click 70% of times. All the settings that I see have to do with delay between 2 clicks to be considered a double click, but here I am not making 2 clicks. One simple click registers as double click. I don't have any other mouse to try, but the same mouse was working fine in Fedora 14, so I don't think it is a mouse hardware issue. It is x86_64. Gnome / KDE both have this issue, though display manager is GDM in both the cases. Any pointers highly (HowTos)