Arduino and 1-wire

Has anyone had any problems with this library in Arduino-0011?

I am trying to interface to the 1-wire weather station and am just initially trying to access the ds1820 temperature sensor. But when I try the sample code provided with the library it can't seem to find any addresses. If I comment out the search part and enter the address manually it does return a presence pulse but all zeros for the temperature and 0 for the crc

This is exactly what it returns : R=10 A 36 9 0 8 0 C9 P=1 0 0 0 0 0 0 0 0 0 CRC=0

I'm not very good at understanding the code and maybe I've jumped into deep water but the wiring I2C library was so easy, I kind of expected the same here...

Thanks,