Clutch Pedal/linkage problems of the 2008 Nissan Altima

While being shifted into reverse from a stop in a parking space, our '08 Nissan Altima coupe 6spmt made a loud clunk from the engine compartment and the clutch pedal went immediately to the floor. The shared brake/clutch reservoir was found to be drained to the level of the clutch takeoff. While this presented no immediate safety issues, had it happened while shifting at highway speed, I can imagine it would be, to say the least, highly distracting for the typical driver and perhaps more so for a less experienced one. I have experienced clutch failures in other cars but typically the system deteriorates slowly, unlike this sudden failure. I have diagnosed the failure myself (competent diy mechanic) and based upon no signs of leakage or mechanical failure in the area of the clutch master cylinder or reservoir, but brake fluid dripping from the transaxle, I am confident the clutch master cylinder or an internal hydraulic line has failed. Thanks!.

I have 2008 Nissan Altima with a manual transmission. About three weeks ago I noticed that the vehicle has been "dragging" in first and second gear. I have not noticed any problem with the clutch. The gears shift as normal but there is a squeaking noise. Even in 3-6 gears the vehicle will not pick up speed as it should. I took it to the dealership and they tell me it is the clutch that is worn out. There is no check engine light or any warning sign showing. Normally a clutch burns out and the pedal will fall flat to the floor. In this case none of that has happened. I bought the vehicle from the dealership in 2009 with 11000 miles on. I have been driving a jetta with manual transmission since January 2005 with no such problems. My research on internet indicate other people have similar problem with Nissan manual transmissions.