HI, WE ARE HAVING THE SAME PROB AT MO,OUR PLUMBER IS DEALING WITH IT(SORT OF!)AND WE THINK EITHER THE WATER PRESSURE HAS CHANGED AND IT IS TOO HIGH(A GISMO IS BEING FITTED 2MORO 2 REDUCE THIS) OR IF THAT DOSENT WORK THEN MAYBE OUR STOPCOCK HAS A BROKEN WASHER(WE ARE ALL OFF MAINS SO EVERYTHING PASSE...