After say an hour of reading posts on forums i get a strange response from my mouse,instead of the wheel scrolling the page up and down it resorts to the page being magnified or unmagnified like using zoom in and zoom out.
So i close browser and restart,only the browser will not restart so i try system monitor but that will not start.
log out then log back in and all is normal.
Using latest KDE build.
Seems only to happen when i am not actively posting(just reading)