Hi Alain, and thanks for posting.

Yes I'm using 4.7K resistors on each of the DS18B20's. The cable length is approx 2m from the tip of the sensor to the unit, and made up of three wires twisted (used a drill). My research didn't throw up anything about having to use shielded cable between the sensor and the PIC.

I'll zip up all the code (including the includes !) and let you check the code. To make things simpler, could you pm me your e-mail address.

Thanks