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when many tab windows are open (e.g., 20 or more), Firefox frequently freezes




Tabbed Browser
9 years ago
8 years ago


(Reporter: Ken Benton, Unassigned)


Firefox Tracking Flags

(Not tracked)




9 years ago
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv: Gecko/2008120122 Firefox/3.0.5
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv: Gecko/2008120122 Firefox/3.0.5

I often have firefox running with multiple tabs open (20 or more). This makes Firefox unstable and it frequently freezes, especially if an additional window-- for example, if I try to attach a file for a gmail message, the "browse" window to locate the file results in firefox freezing. It also happened when I opened up the download window to open a download. The opening of the download windows caused firefox to freeze (again this only happens when a large number of tabs are open).

I used to run multiple tabbed windows in earlier versions of Firefox (since the tabbed was first released), and did not have this problem. There seems to be a bug causing Firefox to freeze because a large number of open tabs.

Reproducible: Always

Steps to Reproduce:
1. open firefox with 30 tabs (this also happens if you multiple tabs and a new browser windows (i.e., control-N and multiple tabs)
2.  go to a web page where you need to perform a "browse file" to open an attachment-- for example, go to gmail, compose an email, and try to attach a file to the email
3.   This should cause firefox to become unstable and freeze.
Actual Results:  
firefox froze

Expected Results:  
not become frozen

I run vista 64-bit
Can you reproduce this if you run Firefox in teh Firefox safemode ?

Comment 2

8 years ago
I opened 65 windows and could not reproduce, please reopen if you can in safe mode.
Last Resolved: 8 years ago
Resolution: --- → WORKSFORME
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