When dragging the mouse to select text:

Selecting within a page is fine. However, when going over a page boundary the 
jump is not smooth. Rather the highlighting stops as you go over the footer and 
header and then it starts off again with a jump. Usually you end up a couple of 
pages down the document. Trying to recover the situation by dragging the mouse 
back up usually results in the selection going the other way by a couple of 
pages ! And this all the time holding the left mouse button down !! The only 
option is to locate the start of the text again and use <Shift><Down Arrow>, or 
<Up Arrow>

Contrast this with Word where the move between pages takes place at a slow, 
regular pace so you don't have to test your reactions in trying to stop at 
precisely the correct point. In fact Word speeds up or slows down depending how 
far away the mouse is from the editing window.