>Another reason, people just explore.
>The more time pass, the more people know the quest.
>Eventually it becomes public anyway.

Eventually it becomes public anyway? What the #### are you talking about. Nothing becomes "public" just because ten different people do a quest.

>What is the solution?
>There are several:
>- change a quest every time it becomes well known.
>( may be annoying to coders )

This has already stopped happening.

>- make its reward "not overpowered".
>( personally I would like it )

So then everyone gets this not overpowered reward...then bitch and moan because they think they are entitled to it. Perfect example...travelling boots.

>- disable a quest
>( hardcore solution :) )

Which is likely what will continue to happen. It's the simplest solution.

>>Just keep pretending the problem is on the Immortal side of
>>things, Rooqweaz.
>
>Keep pretending the problem is on the player side only.

Uhm...again...what the #### are you talking about. We write them...we put them out there...we want them to be enjoyed by people who like puzzles, not by some #### who was told step-by-step how to do it. This is why they get yanked instead of changed.