Sylar - Where are His Powers?

In episode three, we are reintroduced to Sylar, but this time, things don't seem quite right. He is injured, and being cared for by Candince. When he attempts to move a cup using his TK, he fails. Candince explains to him that his powers will return with time, as soon as his chest heals. Sylar then promptly kills her in an attempt to obtain her power of illusion. When he attempts to use it, he fails, showing that not only are his old powers gone, but so are any newly obtained ones.

In episode four, even though he seems to be relatively OK, he is still unable to use any of his powers. He must take a brick and kill Dennis by smashing in his skull. Even his original ability seems to be non-functioning, as he is unable to discover Maya and Alejandro's abilities on his own.

So the question remains, when will Sylar's power return? Will they all return? I for one hope not. Here is my big problem with both Sylar and Peter, their powers can grow almost limitlessly. At some point, Heroes is going to have to address this. Peter is already WAY to powerful. He is like Superman (flight, strength, invulnerability, energy projection) with the ability to teleport, manipulate time, read minds, move objects with his mind, turn invisible, etc. They are going to have to find a way to limit the power of these characters (much like DC did when they toned down Superman).