InformAction Forums

I recently started getting Firefox freezes on some pages at billmoyers.com (not the main page though. It may not use the script hat causes the problem )

example problem page...
http://billmoyers.com/2014/12/23/wonder ... e-comrade/

I have billmoyers.com whitelisted in the NoScript options.

If I globally disable NoScript, the page loads fine.

Any advice/suggestions would be appreciated.

----------------
NoScript 2.6.9.9
Firefox 34.0.5

Also use Ghostery and Adblock-Plus but they don't seem to cause the issue.

When it freezes, do you see anything related in the Browser Console? (Ctrl-Shift-J)
(related messages usually start with "[NoScript" or "[ABE]"; if you don't know what's related, turn off CSS warnings and post everything else you see)

@ barbaz,
I get a popup dialog with this message:

-----------------------
A script on this page may be busy, or it may have stopped responding. You can stop the script now, open the script in the debugger, or let the script continue.

Script: http://cdn.billmoyers.com/wp-content/th ... ver=1.0:15
-----------------------

If I click the Stop Script button on the dialog, the browser freezes again for a while, then the same popup dialog re-appears. I ultimately have to kill the Firefox process with Windows Task Manager.

@ barbaz,
BTW, I can not open the Browser Console (Ctrl-Shift-J) because the entire browser window is frozen and will not accept key board input.

> I have billmoyers.com whitelisted

Only?
As in no other domains on that site?

> Also use Ghostery and Adblock-Plus

And you've checked with all other extensions disabled except for NoScript?

And what Plugins do you have?
Anything A/V related? And if you disable that?

> I can not open the Browser Console (Ctrl-Shift-J) because the entire browser
> window is frozen

You can open it first & then see if anything shows up once FF starts responding again (which I assume it will at some point).


Script busy or stopped responding

@ therube ,

Yes, billmoyers.com is the only billmoyers domain whitelisted on that site

wordpress and wp.com are also whitelisted - they are used by that site

Yes, when all other firefix plugins are disabled, I still get the freeze condition.

I have no A/V plugins.

I tried opening the Browser Console first. Then loaded the billmoyers link. The script produces a couple jscript deprecated command warning msgs. But why would the script run fine when I set "Scripts Globally Allowed" in the NoScript Options?

Tried to go to the site in an isolated VM, couldn't reproduce any hanging.

What happens if you open the script in the debugger (prettifying any minified scripts) and try to step through it?

BTW wordpress.com on that site is actually only stats.wordpress.com - which is just a tracker...

Just to clarify, the freeze doesn't happen on the site home page. But story pages like this link cause the freeze.
http://billmoyers.com/2014/12/23/wonder ... e-comrade/

The offending Script appears to be
http:// cdn.billmoyers.com/wp-content/themes/billmoyers/libs/js/lib/idangerous.swiper.min.js?ver=1.0:15

But "stepping through it" with a debugger is beyond my skill level.

I guess if you can't reproduce the freeze, it must be a problem with my system and/or browser/plugin config. Thanks for checking into it for me. Have a great holiday.

ClarenceOddbody wrote:I guess if you can't reproduce the freeze, it must be a problem with my system and/or browser/plugin config. Thanks for checking into it for me. Have a great holiday.

You're welcome, if you get it working please let us know how you got it resolved

Performance problems after whitelisting are often caused by sites that thrash the XSS filter (ie making lots of requests that look like XSS). What happens if you temporarily turn off Options-Advanced-XSS-Sanitize suspicious requests?

@Thrawn,
Thanks for the XSS tip. But it didn't change the freeze behavior.

It looks like 'iDangerous swiper' is a library designed for touchscreens. You appear to be on desktop Firefox, so you could probably block it using an ABE rule: