The scrollbar should be improving in PP, some current changes can be previewed in 11.10 thru https://launchpad.net/~ayatana-scrollbar-team/+archive/release?field.series_filter=oneiric
The middle click 'jump to' works well
some scrollbar changes
Archived thread 1859489 from Ubuntu +1 (Precise Pangolin)(Closed). Markdown source: Ubuntu_+1_(Precise_Pangolin)(Closed)/thread_1859489_some_scrollbar_changes.md
cool !