525715 - Firefox uses over 100 % of CPU according to Activity Monitor

Status: RESOLVED INVALID

(Firefox :: General, defect)

Description

[John]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_1; en-us) AppleWebKit/531.9 (KHTML, like Gecko) Version/4.0.3 Safari/531.9
Build Identifier: 

Since upgrading to build 3.5.4 very recently, Firefox is DEADLY slow.  Typing a search two or three keystrokes at a time appear then LONG pause before next keystrokes appear.  Try to get the products about screen takes over 2 minutes.  Long periods with the spinning pizza or beach ball or whatever you like to call it.




Reproducible: Always

Steps to Reproduce:
1.Open firefox
2.pray that it will respond
3.curse the maker for not answering your prayers in the affirmative
Actual Results:  
Spinning wheel or beach ball, or whatever you call it.  Program hangs.

Expected Results:  
opened the page or made the window you clicked on the current focus.  OR shown your cursor in the taxt box or field or address bar, and then allowed you to start typing.

I do not use a theme.  I have a Mid 2007 iMac with 4 GB of RAM and the dual core processor.  Firefox has had occasional trouble on this computer in the past (eight or nine months ago) but has been far more stable on this computer then it ever was on Wierdoze (Windows), until now.  This build is the worst upgrade for Firefox I have ever been associated with.

Comment 1

[Ria Klaassen (not reading all bugmail)]

Is this reproducible in safe-mode / with a new profile?
http://support.mozilla.com/en-US/kb/Safe+Mode
http://support.mozilla.com/en-US/kb/Basic+Troubleshooting#Make_a_new_profile

Comment 2

[John]

IT appears that the NoScript Extension I was running was causing the problem. And they have an update from 1.9.9.12 to 1.9.9.14 which appears to have resolved the issue.  

Thank you, Ria, for the links to the troubleshooting.  I had forgotten about the safe-mode and should have checked the troubleshooting page before posting.