Re: Emacs 23 scrollbar behavior

[Bernardo <bernardo.bacic@pobox.com>]

> I have a mouse with a scroll-wheel. An I use it a lot. But often I have
> to skip more than a few lines. Moving a quarter of a 4000 lines source
> file means to move 1000 lines. I use to do that with the scroll bar,
> rather than with a hundred wheel turns.

not addressing your original question, but to jump over large chunks in 
a file you may want to consider an alternative to reaching for the 
mouse, like in your case (roughly):
C-2 M-<

,----[ (beginning-of-buffer &optional arg) ]
| Move point to the beginning of the buffer; leave mark at previous
| position.
| With C-u prefix, do not set mark at previous position.
| With numeric arg N, put point N/10 of the way from the beginning.
| (beginning-of-buffer &optional arg)
| ...
`----