So slow

[pitch]

Hi again, as you can see i am new to My publisher. I started making my book yesterday, everything went well except for some caption issues (See previous post). The importing pictures went real fast so did the whole process of making the book. Today however is a different story, whenever i want to turn pages, drag pictures in the designated box, change page layout,....well do about anything it is extremely slow. I am using the same computer, have no other programs open, have enough memory space available,..Why is is to slow?