Currently I'm using the following solution....
I covered the camera with a black piece of paper..
Hid the camera icon with app locker...
Disabled the lens cover launcher...
used shortcutd to remap camera key.......but there is a prob here.....at times the camera app starts on pressing the camera key even though its remapped...that wont do.

any solutions?? since maemo is quite open, isnt there some way to disable the cameras altogether?? n what about the poput message which can make it more convincing?