maybe no. i've had the same thing. check your vacuum line (its hard to describe without a picture, but its under the engine cover towards the front right of the engine and its a series of three pre-bent hoses connected at a single check valve). its directly hooked up to the brake booster. my problem was a broken plastic piece at the top of the engine at the end of one of these pre-bent hoses. FIX IT ASAP!!! i had no idea what was going on initially, but it finally snapped in two. my throttle was going out of control, and i had no brakes. the brake pedal would not depress a single centimeter.
i'm not sure if this is actually the problem, but definitely something you should check out.