User Manual Bosch KGN36XLER Serie | 4 Free-standing Fridge-Freezer 

The rubber seals are not actually inside the fridge-freezer and are therefore warmer. This allows bacteria to grow and mold to form. Clean the rubbers regularly to prevent this.

This depends on the size, age and model of the refrigerator. It may take several hours to 24 hours for the refrigerator to reach the set temperature. The process can be accelerated by placing non-perishable goods in the refrigerator. The temperature in the refrigerator cannot be measured properly by feeling the air inside. The best way to tell if the refrigerator has reached the set temperature is to place a glass of water in the refrigerator with a thermometer in it.

Yes, this a completely normal phenomenom. The moisture that enters the fridge-freezer with warm air or products will settle on the coldest part, being the back wall. Because the back wall can reach temperatures below freezing, the drops will freeze from time to time. When the fridge-freezer is idle the drops will thaw and flow to the drain of the fridge-freezer.