I have seen a few separate threads regarding a front rattle/knocking noise on some Gen II Prius. This is not the engine mount metallic-knock sound but rather a subtle rattle coming from the front end when going over smallish bumps at low speeds and sometimes accompanied by a slight knock in the steering wheel. My '07 with ~50K miles is exhibiting this issue and the dealership/corporate refuse to do anything about it. I'd like to get a feel for how many folks out there have the same issue. How would you describe it? Have you reported it to a dealership? Has it been fixed? Any shared experience would be helpful. I'm quite frustrated with Toyota's response on this issue. Thanks.