Urgent - Clutch won't work, master cylinder gone?

Driving home yesterday I took off normally at a set of lights and stalled it. After that I noticed that the clutch pedal now had a lot of free play in it, maybe 50% or more before I could engage the clutch. Things got worse over the next few minutes as i found it harder to change gears and eventually I wasn't able to change gears at all while the engine was running.

Basically now the clutch does not work at all when the car is running, so I had to stall it or turn the car off whenever I stopped and then start the car and take off in 2nd and leave it in that gear. Clutch fluid is a tiny bit low, but maybe only 15mm below the line and I haven't noticed any leaks at all. A new clutch was also installed approx 18 months ago. My mate reckons the clutch master cylinder is gone as he had the same thing happen to his car.

I'll most likely be taking my car to Midas tomorrow morning since its less than 2k's down the street in hopes its not a big job.
I'm located in essendon btw and my mr2 is a daily driver to and from work making me stranded without it. So any help or info would be greatly appreciated as I'm not very mechanically minded.

Steven

Edit - The clutch pedal is not stuck to the floor at the moment, it just has a lot of free play and you can only apply pressure to it when its about 2/3rds of the way down.

Cool, thanks mate. Is there much work involved in changing the master cylinder? Is there a how to or DIY somewhere because I can't seem to find anything..

Just checked it out again before and there's pressure from about the halfway point onwards. However, from memory. When the car is running and in gear, the pedal is pretty much stuck all the way to the floor so can't put it into neutral

Cool, thanks for the replies mate. Taking it to the shop tomorrow so I'll see what they have to say. Just trying to find out as much as possible and what's involved in fixing the problem..

Ok so my mr2 drove fine when i went to take it to the shop today. No problems clutching or changing gears. Mechanic said it may just need a fluid flush or something along the lines of - if its a hot day and you're being a bit heavy on the brakes the fluid boils effecting the clutch...

Didn't really understand what that ment but left it in their hands anyway to check it out.

Ok so they just buzzed me. Slave cylinder is leaking and fluid is dirty so needs a flush/change. Quoted $290 for the slave cylinder and $60 for the fluids. Happy to leave it for them to take care of as I've got no idea what I'm doing when it comes to this sorta stuff. Also was expecting a lot worse with the amount I've spent on repairs/services on my mr2 over the years..

Thanks to everyone for all the replies and help. Muchly appreciated!!

Here's something else to consider.
The slave cylinder is a strange one in that it has TWO lines going into it. i.e. dual port slave cylinder.
 (see the picture)

 
 
I've had one of the clutch lines fail on me TWICE (p/n:31483) The hard line cracked and started leaking. So i'm all too familiar with the clutch-less drives. those two clutch lines are solid lines that go between a bracket (that's bolted up with the FRONT engine mount) and the slave cylinder. It's just messy.

 After that, i decided to remove the STUPID dual port slave cylinder and replace it with a single port camry slave. (SV21)
I then got a braided clutch line made up to bypass the stupid bracket and dual lines. I've been driving on it for about 18 months now. (including a trip from Sydney to Adelaide)
The pedal feel hasn't changed much at all, the length/throw is a bit particular and the pedal needs to be adjusted to make sure it doesn't engage too far/not enough.
 
I think the cylinder cost me about $40, and the line was about $90.

Also... I still have my original dual port slave cylinder available for sale. I'm not going to use it anymore.