Opera Mini users on Windows Phone have been complaining about app crashes for the browser. Thankfully, the developers have heard your plight and have updated the app to fix any of these issues. You can go back to browsing content-heavy sites and with Opera Mini it is meant to save you every byte it can since it reduces sites to 10% of their size to help things load faster while you are on the go.
Source: Ubergizmo | Download: Windows Phone Store (Free)