Has anyone encountered problems with the new Aptamil formula now in the shops? It has twice the amount of prebiotics in it (listed as O.8g fibre, previously 0.4g). Whilst they warn you that babies will poo softer stools more frequently, my 6mth old has reacted quite dramatically - explosive, wet poos, very thirsty all the time and refusing his solids. Am thinking of changing formula now. Anyone else experiencing anything similar to this?