Stock Summary report problem

After Receiving the material and adding some landed costs via landed cost vaucher stock balance shows the correct prime cost. But after transfering the material to another warehouse and adding some new costs, it takes quite time to update the stock balance, sometimes it takes two other times more than five hours or it updates the next day. But when you get updated stock balance it duplicates the materials. Your actual quantity is shown in the latest warehouse which is right but the warehouse that you took materials out turn into the waiting for the same amount. 0 0 (24) for example. Each time you transfer your material to another warehouse former one becomes 0 but it shows that the materials is on waiting.