Opera stable gives me "Page crashed" notice in the browser window dozens of times a day. I have to reload the page every time it happens. Usually it happens, when there are several tabs open, and one of the tabs is inactive.
The thing is, I never saw anything that bold in any other browsers. If any plug-in/extension mailfunctions, other browsers would simply display some info without blocking the whole page. That way I know that this particular issue is related to a certain plug-in/add-on/extension.
OS: Windows XP SP3, Opera 27.0.1689.54.