problems with onewire ds18b20 and analogread

Hi everyone,
I’m compiling a sketch in order to sense the temperature with a Dallas DS18b20 (that uses onewire protocol) and to drive a peltier cell (I’m using the Droids tank 3a-hp bridge). Everything works fine but when i try to connect the current sensing pin of the bridge to an analog pin of the arduino the ds18b20 stop working…
And how this can be?

Not enough information provided...

http://www.arduino.cc/playground/Learning/OneWire I would read through this again, assuming you have already. Next I would recheck all my connections. Sometimes it's best to just undo everything and rebuild.