308756 - hang loading australianit.news.com.au

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Mikel Ward]

When attempting to load this page, the whole browser hangs for over 5 seconds. 
Other pages on the same site exhibit similar problems.

Last time it happened, it appeared to be hung loading an advertisement from
adserver.news.com.au.  I also think other sites have hung when loading
advertisements from servers such as ad.doubleclick.net.  I don't know if it
affects only Java applets or Flash animations.

I use a web proxy with automatic detection (PAC) enabled.  In the past proxy
queries would cause Firefox to block.  Perhaps this is also related.

I am running Firefox 1.5 beta 1.

Installed plugins from about:config include:
Shockwave Flash (Shockwave Flash 7.0 r19)
QuickTime Plug-in 6.5.1
Java(TM) 2 Platform Standard Edition 5.0 Update 2
Adobe Acrobat (Adobe Acrobat Plug-In Version 7.00 for Netscape)
QuickTime Plug-in 7.0.2

This problem makes running Firefox extremely annoying.

Comment 1

[Mikel Ward]

Our proxy server does not resolve ad.au.doubleclick.net, yet does not seem to
answer within a reasonable time.  The whole browser is hanging waiting for this
name resolution.

Comment 2

[Mikel Ward]

I had enabled pipelining (about:config: network.http.proxy.pipelining).  I
disabled it just to check, but the problem still persists.

Will see if this is relating to any existing DNS issues.

Comment 3

[Ria Klaassen (not reading all bugmail)]

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20050915
Firefox/1.6a1 ID:2005091504

It loads within a reasonable time. 
Maybe adservers are too busy. In that case Adblock or a hostsfile might help.

Comment 4

[Chris Vance]

(In reply to comment #3)
> It loads within a reasonable time. 
> Maybe adservers are too busy. In that case Adblock or a hostsfile might help.

I think the issue here is that the whole browser is unresponsive while things are happening on the backend (name resolution, waiting to hear from the proxy server, whatever).

The browser interface should still be responsive in these scenarios.

I did not have problems visiting the site with:
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7

Michael, do you still have a problem with the browser hanging?  Can you try using a release candidate of Fx 1.5 to see if a newer fix has resolved your issues?

Comment 5

[Wayne Mery (:wsmwk)]

=> incomplete due to no response to comment 4.
please comment if you do still see problem