I start scrolling a little bit and then the page uncontrollable scrolls down to the bottom of the page slowly. During which time firefix is unresponsive.

Question

I will scroll down the page with either the keyboard, mouse or by click on the onscreen scroll bar and it will start uncontrolably scrolling to the bottom of the page. It also crashes a lot.

Answer 1

The page numbering goes with the section which derives from the template you used to create the page.
For example you would have a Preface section with certain +master objects+ that numbers with roman numerals.
Then you would have the body of the book following which restarts the count from 1 and uses Arabic numbers. This again would have its own +master objects+.
You need to insert the page numbers you want in the section's +master objects+ . Do this by going to +Menu > Format > Advanced > Make master objects editable+ .
The +master objects+ are what repeats on each page. What I think you have done is insert the page number only on the page you are looking at, which is why it has only inserted once.
I presume you will be inserting your page numbers in the Header or Footer which you will be able to see if you go to +Menu > View > Show Layout+ .
To control how the pages are numbered and with which number they start go to +Toolbar > Inspector (the blue icon with the i in it) > Layout (2nd tab) > Section+ and set what you want there.