Alessio: The "ubuntu1" in "1:2.5.3-0ubuntu1" says: this is a change done in Ubuntu. How did you figure out there's no Ubuntu change? Did you check the diff between the two source packages?
Alessio: The "ubuntu1" in "1:2.5.3-0ubuntu1" says: this is a change done in Ubuntu. How did you figure out there's no Ubuntu change? Did you check the diff between the two source packages?