HI dj paige. Thx for replying.
i found no preference file in my user/library/
i only found user/library/preferencepanes
and i did search on com.adobe.LightRoom4.plist but i found none.
i did search for the
picture/lightroom and deleted the catalogs file, and when i open Lightroom again, it did ask for a new catalog name.
i created a new catalog but the thing remains the same.
any other solution? i did delete the apps, and reinstall the apps. but i did the same.