Hello guys. I'm importing 5mb Textures different sets from 128x128 to 256x256. The amount of them is total 5MB on my HDD. When i Import them Into UDK the size of the package is 25 MB ? What is happening ???? Ideas ?

The texture's were a lot bigger before. 1024x1024 512x512.
And when i deploy my game to the iPhone 4.
Prevoius Size of the game : 45 MB

Size with optimized Textures : 45 MB

Can't catch whats is going on really ...