608253 - firefox hungs on some pages javascript on VISTA or windows 7

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[gennady.krasnikov]

User-Agent:       Mozilla/5.0 (Windows NT 5.1; rv:2.0b6) Gecko/20100101 Firefox/4.0b6
Build Identifier: Mozilla/5.0 (Windows NT 5.1; rv:2.0b6) Gecko/20100101 Firefox/4.0b6

releas hangs on win7/vista for a long time,
beta show info for script stopping

the same pages on winxp is ok
chrome work fine in the same enviroment



Reproducible: Always

Steps to Reproduce:
 navigate on the page with bad script
  - page is shown
 go to home page
 navigate on the bad page again

Actual Results:  
  - firefox memory grows, firefox hungs, 
  - after some time beta show saggestsion to stop the bad script

Expected Results:  
 - firefox (on XP) show page without hung

Comment 1

[Matthias Versen [:Matti]]

There is no difference between winXP and Vista except for the UI.
Please try http://support.mozilla.com/en-US/kb/Safe+Mode

Comment 2

[gennady.krasnikov]

I try it. The hang is reproduced.
Firefox beta eats huge amount of memory on this page showing its sagestion to stop the script. Can I attach the dump of the process? If I stop the script and close firefox it hangs in processes with 50%load (on two core CPU) till I kill it.

I agree that it can depend not from the OS version only. I have 3 comp. win7 stater and vista reproduce the bug, on win7 enterprise everything is ok. May be CPU version (AND/Intell)?

Comment 3

[Tyler Downer [He/Him]]

Are you still seeing this with Firefox 4 final?

Comment 4

[gennady.krasnikov]

no