Wanted Medium XC frame

I have had the frame for nearly 2 years and its done me well and iv passed the maximum hight on the seat post so a bigger frame is next i guess.

Im 5.10 and i have a small frame but im looking for a medium (second hand),

Thanks, Max.

sorted..

Can someone help this guy out... Max is going to be a great racer next summer if he can get a decent bike.
I know you guys are hiding frames from your missuses here a chance to send one to a very good home!!!