This is not an issue for me during the day, but it is at night. I believe that it is caused by the plastic shell on the diaper stretching, and I solve it by reinforcing with packing tape. This only seems to be an issue with the upper tapes, not the lower. During the day I typically change my diapers every three to four hours, so perhaps they don't have time to stretch. At night I generally wear the same diaper for six to seven hours, and moving from back to stomach to side in my sleep is harder on the tapes and landing zone than being mostly upright during the day. I figured this out after leaking at the waist and wetting the bed during the night on a couple of occasions. Neither my wife or I were happy about that!