Just installing Opera's new builds over the previous ones is enough!! The settings do not vanish with each installation:) Yup , it is an old problem , i never ended up trying 8.5 as 9 beta was out by the time i went on to opera , but that problem used to trouble me before , dont know which version.But in the recent past , i have not been seeing it happening!! One thing you can do for now is , enable clear catch on exit , so that every time you reopen oopera , it downloads the latest stuff rather than using the old files in the catch!!! If any one has any remedy to remove this problem forever , i would love it .