I agree with Cujoedaman.
Everything he saidwas what I wanted to say. The puzzles aren't puzzling. They are poorly thought, constructed and deployed. You need clues for use to find your clues. I tried to get through it without out a walk through, like I do with all games I play online, but this one was different. After 15 minutes of looking for clues, I was left with no option but to use the walk through. Happily I discoverd that I wasn't being impatient or stupid with my choices, because looking for clues is better the trying a random combintaion, of which there are 9,999 choices for that lock.
The brick puzzles was ofcourse near impossible to discover without the walk through. No one would think to try clicking on a brick there. Unless someone ran around clicking all over the place and discovered it randomly, there is almost no finding it.
You can't assume that everyone in the world has an IQ of 200, or have psycic powers of some sort. I am usually GREAT at these point-and-click games, so for me to find it difficult, there must be something that needs fixing. (And no, I wasn't bragging.)
Work on your clues, simplify things, and make the puzzles possible.