491100 - Hangs for 30 seconds on launch

Status: VERIFIED DUPLICATE of bug 501605

(Firefox :: General, defect)

Description

[darknz]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1b4) Gecko/20090423 Firefox/3.5b4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1b4) Gecko/20090423 Firefox/3.5b4

Every time I launch 3.5 Beta 4 the browser will hang for 30 to 40 seconds.


Reproducible: Always

Steps to Reproduce:
1. I install 3.5 Beta 4
2. Open Firefox.exe
3. Browser does not appear for 30 to 40 seconds before appearing.
Actual Results:  
Browser hangs and window does not appear for 30 to 40 seconds.

Expected Results:  
Browser window should launch immediately or within a few seconds.

This also happens on the latest nightly builds. I have uninstalled/reinstalled, deleted every trace of Firefox every being on my system, started in Safe Mode, tried opening with a different profile, removed all the extensions/plug-ins.

Opening a subsequent window has no issue at all. Using 3.1 Beta 3 or earlier also has no issue. I can have both 3.0.10 installed and 3.5 Beta 4 installed alongside each other, and the 3.0.10 build opens perfectly fine every time.

CPU will go to approx. 50 for the 30 to 40 seconds it takes to load. I have installed this Beta on other machines and have no issues.

Comment 1

[Ria Klaassen (not reading all bugmail)]

Is this with default set of bookmarks and no history?

Comment 2

[darknz]

(In reply to comment #1)
> Is this with default set of bookmarks and no history?

Yes. I have tried a completely fresh install with default bookmarks and no history as well as trying with an existing profile which has bookmarks/history.

Comment 3

[Ria Klaassen (not reading all bugmail)]

When I start Firefox 3.5 on a really slow Windows XP computer with a new profile, it takes 13 seconds the first time, and every subsequent restart 3 or 4 seconds.
With my default profile however with a bunch of extensions and 6 months of history, it takes 1 minute and 10 seconds on the same computer.

Comment 4

[darknz]

Tried with Firefox 3.5 RC1 today after uninstalling 3.0.11. Still the same problem, possibly worse than before. I have tried installing on the same computer with Windows 7 installed instead of Windows Vista (dual boot setup) and all versions of 3.5 load quickly.

Comment 5

[Andreas Nilsson (:andreasn)]

I saw this on a friends XP system as well. Is there a easy way to debug what's going on during launch?

Comment 6

[darknz]

(In reply to comment #5)
> I saw this on a friends XP system as well. Is there a easy way to debug what's
> going on during launch?

I'm keen to be a part of any debugging process that can be suggested.

Comment 7

[Tyler Downer [He/Him]]

timeless may have an idea.

Comment 8

[timeless]

https://deloper.mozilla.org/en/How_to_get_a_stacktrace_with_WinDbg

you have three choices:
1. use !analyze -v -hang w/ windbg when it's starting up
2. use adplus (it comes with windbg, you'll need the same symbols as described in the dev-mo article, but you'll also need to read some documentation)
3. use process explorer (you'll need the same symbols as described in the dev-mo article, you can ask it for a stack trace fairly easily, but again, i don't have a tutorial).

whichever you do, we'd only ever want stack traces as attachments, no pictures, just text, no binaries, just text, just stack traces, and only as attachments, not comments.

Comment 9

[darknz]

Attachment: Stack Trace

I have tried to follow Timeless' instructions about providing a stack trace - if I've done something wrong, let me know and I'll try again. This is all new to me :)

Comment 10

[u348128]

Duplicate of bug 501605.

Comment 11

[Tyler Downer [He/Him]]

timeless, is this bug 501605?

Comment 13

[[e-mail]]

It's a real shame that this bug didn't get spotted earlier :-(

Comment 14

[Boris Zbarsky [:bzbarsky]]

Or more precisely nominated for blocking...