I am running Ubuntu 11.04 on Compaq Presario c772tu. I just noticed that I am unable to click on links/buttons/text if the mouse is in particular areas on the screen. The same link/button/text are clickable if I scroll a bit up or down.
Basically it feels like there is an invisible grid on the screen where the mouse is unable to identify items to click on. The same happens on desktop icons too.
Any help is appreciated.