browser hangs while loading page on mac



15 years ago
11 years ago


(Reporter: John May, Assigned: asa)



Mac OS X

Firefox Tracking Flags

(Not tracked)




(1 attachment)



15 years ago
User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en-US; rv:1.2b) Gecko/20021016
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en-US; rv:1.2b) Gecko/20021016

Loading, most of the text and images
appear.  Then the Mac "spinning pizza" cursor appears, and the browser hangs.  I
can only kill it by using the ctrl-apple-esc Force Quit menu.  The hang does not
occur on Netscape 6.2.3, nor does it happen on Mozilla under Windows.  It
happens on the Mac both with and without JavaScript enabled.

Reproducible: Always

Steps to Reproduce:
1. Disable unrequested popups (don't know if that matters)
2. Point browser to

Actual Results:  
Most text and images loaded, then spinning pizza cursor appeared and browser hung.

Expected Results:  
Finished loaded page and and responded to further input.

Running Mac OS 10.1.5 on PowerBook G3.

Comment 1

15 years ago
Do you hang when Java is disabled ?
Keywords: hang

Comment 2

15 years ago
No, it does not hang with Java disabled.

Comment 3

15 years ago
worksforme on 2002111408/MacOS 9.2.2 with Java plugin.

Comment 4

15 years ago
Hangs for me as well, 2002111808 on 10.1.5.  Watching top, Mozilla is taking
about 10-15% CPU while it's unresponsive; waiting several minutes doesn't clear it.

Comment 5

15 years ago
Created attachment 106771 [details]
Output from running sample while browser is unresponsive

Comment 6

15 years ago
Confirmed using FizzillaCFM/2002110808.
Ever confirmed: true
Summary: browser freezes while loading page on mac → browser hangs while loading page on mac
WFM on 10.2.8 with build ID Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O;
en-US; rv:1.6a) Gecko/20031029.

Could someone test this one on 10.1.5 ?

Comment 8

14 years ago
Appears to workforme on Mac OS 10.1.5 with Mozilla 2003102905. They might have
change the site - I can't find any Java applets (see Comment #2).

Comment 9

14 years ago
I can still reproduce this, Mozilla Mach-O 2003102805, on 10.3.1.  There's
definitely a Java applet there (look for Countdown.class in the HTML).

One interesting thing is I can also freeze up Safari 1.1 on the same page.

Also, watching Mozilla, while frozen, in Shark, the top CPU users are:
ml_set_interrupts_enabled, ARGB32_image_ARGB32 (from the JVM), and
ARGB32_image_mark (also from the JVM).

Comment 10

14 years ago
Bryan, you're right. Sorry, didn't check the code that carefully... The applet
doesn't run for me for the moment (10.1.5). So (of course) I don't experience a

Comment 11

13 years ago
Happy Birthday.

The page is gone; Is there a testcase? If not this report is not going to lead to
a patch/fix, I suspect that if there is a problem (with Java, I would guess) then
there will be other reports elsewhere.

Comment 12

13 years ago
I can still reach this page today (
I just downloaded Firefox 1.0, i.e. Mozilla/5.0
(Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0,
and the problem still occurs.  If I turn off either Java or JavaScript, the page doesn't
hang the browser but the counter doesn't load.  Loading the page in Safari 1.2.3 (v125.9)
works fine. 

Comment 13

13 years ago
Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8a5) Gecko/20041107

Mac OS X 10.2.6

    File name: Java Applet Plugin Enabler
    Java 1.3.1 Plug-in (CFM)

(According to comment 9, the bug was apparent on Panther, but most of the
reports concern 10.1 )

I can get to the page today, perhaps there is a typo in the URL ...

I am fairly sure that I am not seeing the original problem. There is no hang,
no beach ball of doom, various links on the page work and the Java applet

I get these messages in the console:

Nov 15 09:32:59 tit002
/Users/bfowler/Applications/ *** Warning:
ATSUMeasureText has been deprecated.  Use ATSUGetUnjustifiedBounds instead. *** 

no proxy

Countdown applet: counting down to Sun Jun 11 00:00:00 BST 2006

The applet seems to display properly, but it floats (I don't know whether this
is meant).

Product: Browser → Seamonkey
Does this bug still occur in SeaMonkey 1.1 / Firefox 2.x or newer?

Comment 15

11 years ago
Mac OS 10.3.9

It seems to worksforme with a one month old 1.8 branch build of seamonkey (almost 1.1!).

Comment 16

11 years ago
I reported the original bug.  I see I mistyped the URL once in the report above.  The correct URL is
This page now works correctly for me with Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv: Gecko/20061204 Firefox/, running Mac OS Mac OS 10.4.8.
Last Resolved: 11 years ago
Resolution: --- → FIXED
Ok, thanks for testing!
Resolution: FIXED → ---


11 years ago
Last Resolved: 11 years ago11 years ago
Resolution: --- → WORKSFORME


11 years ago
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