[Bug 566412] Re: Autoscroll in Firefox can freeze these at once: Firefox, keyboard, mouse, and possibly other things

[cloudboy]

I get the exact same behaviour described in this bug report.  I thought
I'd just give some additional information here.

The interesting thing is that it literally locks the whole system up.
You'd think I could do something particularly since the mouse seems
responsive and all commands made to either the keyboard or the mouse
appear to queue behind the completion of the autoscroll operation.  So
for instance if I CTRL-Q Firefox or select any app with my mouse it will
perform all of those operations as soon as the autoscoll cursor has
reached the bottom of the page I started scrolling.

I can reproduce this consistently on pages with many images and
seemingly at least one flash video using both 10.0.45 and 10.1 flash
versions.  I am running the latest updates on 10.04 upgraded from 9.10
(as opposed to clean install).  Firefox is version  3.6.3.  I can
provide other information if desired.

Here are a few example pages that consistently produces this result given these operations listed below 
http://www.sc2blog.com/2010/04/ 
http://abduzeedo.com/daily-inspiration-521

* enable autoscroll in Firefox if not already enabled (Edit->Preferences->Advanced->check use autoscrolling)
* go to the top of one of the example pages middle-click to enable autoscroll, move mouse down just slightly to start scrolling (I find faster scrolling speeds do not reproduce the problem)
* wait, noticing that no operation with a keyboard or mouse can stop the scrolling (be prepared to wait a while)

I find that you can start at say the first flash video and start
scrolling up so that you don't have to wait as long for it to finish
scrolling.

This page is an interesting counter example where there do tend to be
flash videos over blog like content but I can not reproduce this problem
with autoscroll: http://lifehacker.com/

-- 
Autoscroll in Firefox can freeze these at once: Firefox, keyboard, mouse, and possibly other things
https://bugs.launchpad.net/bugs/566412
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