Hey Mohammed K, I must say that this is very common with Opera. However, generally, depending on the internal framework/design (e.g. internal memory size, etc) of each Android devices, certain functions or scripts used on websites may overwhelm the device's processor to a point where it terminates the entire application's process tree. To correct this, either try any other browser from thes ( UC Browser, Maxthon or the stock browser that came preinstalled) or try a different Android powered device. Do try clearing cache from your currect browser app as well as corrupt cache may give off such untoward behavior.