As some of us have found out, Opera 12.02 is common just now for lagging on web pages, this has been confirmed by Opera themselves, however the answer was to update from 12.02 to 12.11, but after I attempted to update the browser and when the browser shut down to install the update an error appeared and the windows error would not disappear no matter what, so I needed to do a re-boot. Would this problem be because of the method I used to update given that I use the latest KernelEx ?