369101 - Pauses while typing, scrolling, and navigating tabs

Status: RESOLVED INCOMPLETE

(Firefox :: Tabbed Browser, defect)

Description

[Bob Farr]

User-Agent:       Opera/9.10 (Windows NT 5.1; U; en)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1

Intermittent momentary hangs or pauses lasting up to ten seconds -- every 20 seconds or so. CPU usage peaking at approx 30% while this occurs. Invariably a few seconds after page load completes. 

Affects window scrolling, typing, selecting objects with mouse, clicks, closing navigating, and opening browser windows & tabs.

Reverting to Firefox Version 1.5 resolves issue.

Reproducible: Always

Steps to Reproduce:
1.Open a long page
2. grab verticle scroll bar draghandle and drag up & down for a few seconds until...
3. Scrollbar, window, handle (Everything Firefox) pauses while cursor continues to move. 
Actual Results:  
Everything Firefox pauses for up to 10 seconds at a time. 

Expected Results:  
Normal behavior of windows, scrollbars, text entry etc.

Add-ons removed, cache cleared, default settings, uninstalled and reinstalled... no dice.

Seems to get worse with additional windows and tabs, but it's made Firefox 2 unusable even with only one window/tab in use.

Comment 1

[Ria Klaassen (not reading all bugmail)]

See http://kb.mozillazine.org/Firefox_hangs

Comment 2

[Wayne Mery (:wsmwk)]

still see this problem when using FF 3.5 beta (or 3.0?)
 http://www.mozilla.com/en-US/firefox/all-beta.html

Comment 3

[Tyler Downer [He/Him]]

Please reopen this bug if it appears with a recent version of firefox in a new profile. http://support.mozilla.com/kb/Profiles