My landlord purchased this refrigerator for our apartment 2 weeks ago. After a little over one week it began to get too warm in the fresh food section, and I suspected the problem was frost build up. I defrosted the unit and it cooled to the proper temperature (40 degrees) but within 24 hours it was back up to 50 degrees. The manual says to adjust the dial to "colder" if this happens, but this just causes the machine to run too frequently and thus build up more frost and get even warmer. I am not able to keep this unit's fresh food section at 40 degrees for any length of time, which means it is NOT SAFE to store food in. Incidentally this machine does not come with a thermometer (what do you expect, it's dirt cheap) so I used my own digital thermometer to keep tabs on the internal temperature.