Refresh on machine

Is there any way to refresh all applications and Linux without having to re-install all software? I have some funky things going on with the mouse, and I thinking the mouse is getting too sensitive, reason I suspect: when I click on an icon application menus’s, they open then close. On serveral applications, Thunderbird and Firefox, it pops two or more tabs, for example. It is starting to get frustrating. Any suggestions ??? If I select text on the down click of the mouse and then release the button, the highlight goes away. this is a constant headache.
I am on Suse 13.1 version, patched all the time…

Have you tried a different mouse? Maybe the mouse is broken and giving multiple clicks.