Fatal error occured (4): Unable to download lwjgl.jar....

I'm using the 1.5.2 version of Minecraft.... But everytime I try to launch the game, or even making a "Force Update", the game crashes by giving me this message: "Fatal error occured (4): Unable to download lwjgl.jar....".

What do I do? I already tried updating my Java.... Does anyone have a solution for this?