User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4a) Gecko/20030329 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4a) Gecko/20030329 When the "up" and "down" keys are pressed or when the "up" and "down" buttons on the scrollbar are pressed, the content scrolls up or down by one line. Without smoothscroll, this was necessary to allow the user to keep track of the content. With smoothscroll, the scroll step seems too short. There should be an option to tweak the number of lines by which to scroll; the default should be around 3 lines if smoothscroll is on, I think. Reproducible: Always Steps to Reproduce: 1. Turn smoothScroll on. 2. Open the browser and go to any webpage longer than 1 page. 3. Press the "down" key. Actual Results: The content area scrolls down by 1 line Expected Results: The content area should scroll down by about 3 lines.

I don't plan on changing this anytime soon. I'll leave this bug here to collect comments. In general I'll resist doing UI design via Bugzilla; UI design can't be as reactionary as that.

While I agree that it would be nice to have some more real feedback, I also have to say that arrow-based scrolling feels oddly slow. I would be happier with a two or three fold increase.

Actually I take that back. If feels slow during testing but during actual use it is fine, and making it faster would hurt usability for me.

It definately feels a little slow for me with smooth scrolling enabled.

I also think the default scroll step is too small, but I don't think the scroll step should depend on whether smooth scrolling is enabled.

Yes, I do also think the default one is too small. The scroll lines of keyboard lack harmony with mouse wheel scroll. So, it would be nice having an option to use "mousewheel.withnokey.numlines" value as keyboard arrow scroll steps.

*** Bug 207992 has been marked as a duplicate of this bug. ***

*** Bug 256525 has been marked as a duplicate of this bug. ***

IE seems to scroll based on a percentage of the window size or content area height. Maximized at 800x600, IE scrolls 3 lines. Maximized at 1024x768, IE scrolls 4 lines. Maximized 1600x1200, IE scrolls about 7 lines (not a whole number). We should do something similar.

smoothscroll isn't the default setting. I imagine we'd consider a reviewed patch, but not going to block the release for this.

See also bug 334098 for making it a pref. See also bug 332582 for Minimo.

*** Bug 334098 has been marked as a duplicate of this bug. ***