Problemsssssss please help ASAP.

[00boxster2.7]

I went outside the other day to get in my Boxster to go to work and went to start it pressed the clutch and the slavecylinder broke and the clutch peddle went to the floor so I figured it was an old (SC) so I ordered a new one and installed it while bleeding this one and it starts getting pressure then the new breaks and I'm trying to figure out the cause has anyone else had any problems like this if so what is the cause and how can I fix it. Please and thank you.

[germaneighter]

Could be a broken/cracked throw out bearing fork...causes guts of the slave cylinder to come out too far.

[00boxster2.7]

The slave cylinders are breaking in half the guys aren't coming out there just breaking where the rubber and plastic meet.