When your on web twitter or facebook any place , if you see a link and click it the browser will go to that link and you need to press backspace and come to this window

Instead press and hold on that link and you will get options as to open in new window , you can also add it to fav ...

one more may be you know
To see cpu utilization when something wrong
go to xterminal and run the command top
you will get cpu , mem and to p10 process using the device ///

Thanks above all for the tips