Bug#857107: warning: unresponsive script hangs Firefox

[William Melgaard]

Package: firefox-esr
Version: 45.7.0esr-1~deb8u1
Severity: important

Dear Maintainer,

   * What led up to the situation?
My Email provider shows ads, which require running scripts. I get the following
popup (example):
"A script on this page may be busy, or it may have stopped responding. You can
sstop the script now, open the script in the debugger, or let the script
continue.

Script: http://j.adlooxtrackin.com/ad.../tfav_infectionsng_banoneinf.js:12"
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
I opened the same Internet window using Firefox under Windows 8, which was
running as a Virtualbox guest. There is no problem in that context.

A longer wait time prior to "unresponsive script" may be sufficient.



-- Package-specific info:

-- Extensions information
Name: Default theme
Location: /usr/lib/firefox-esr/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}.xpi
Package: firefox-esr
Status: enabled

Name: Firefox Hello Beta
Location: ${PROFILE_EXTENSIONS}/loop at mozilla.org.xpi
Status: enabled

Name: Video DownloadHelper
Location: ${PROFILE_EXTENSIONS}/{b9db16a4-6edc-47ec-a1f4-b86292ed211d}.xpi
Status: enabled

-- Plugins information
Name: Shockwave Flash (11.2.202.635)
Location: /usr/lib/flashplugin-nonfree/libflashplayer.so
Status: enabled

Name: Skype Buttons for Kopete
Location: /usr/lib/mozilla/plugins/skypebuttons.so
Package: kopete
Status: enabled


-- Addons package information
ii  firefox-esr    45.7.0esr-1~ amd64        Mozilla Firefox web browser - Ext
ii  kopete         4:4.14.1-2   amd64        instant messaging and chat applic

-- System Information:
Debian Release: 8.7
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages firefox-esr depends on:
ii  debianutils               4.4+b1
ii  fontconfig                2.11.0-6.3+deb8u1
ii  libasound2                1.0.28-1
ii  libatk1.0-0               2.14.0-1
ii  libc6                     2.19-18+deb8u7
ii  libcairo2                 1.14.0-2.1+deb8u2
ii  libdbus-1-3               1.8.22-0+deb8u1
ii  libdbus-glib-1-2          0.102-1
ii  libevent-2.0-5            2.0.21-stable-2+deb8u1
ii  libffi6                   3.1-2+b2
ii  libfontconfig1            2.11.0-6.3+deb8u1
ii  libfreetype6              2.5.2-3+deb8u1
ii  libgcc1                   1:4.9.2-10
ii  libgdk-pixbuf2.0-0        2.31.1-2+deb8u5
ii  libglib2.0-0              2.42.1-1+b1
ii  libgtk2.0-0               2.24.25-3+deb8u1
ii  libhunspell-1.3-0         1.3.3-3
ii  libpango-1.0-0            1.36.8-3
ii  libsqlite3-0              3.8.7.1-1+deb8u2
ii  libstartup-notification0  0.12-4
ii  libstdc++6                4.9.2-10
ii  libx11-6                  2:1.6.2-3
ii  libxcomposite1            1:0.4.4-1
ii  libxdamage1               1:1.1.4-2+b1
ii  libxext6                  2:1.3.3-1
ii  libxfixes3                1:5.0.1-2+b2
ii  libxrender1               1:0.9.8-1+b1
ii  libxt6                    1:1.1.4-1+b1
ii  procps                    2:3.3.9-9
ii  zlib1g                    1:1.2.8.dfsg-2+b1

Versions of packages firefox-esr recommends:
ii  gstreamer1.0-libav         1.4.4-2
ii  gstreamer1.0-plugins-good  1.4.4-2+deb8u2

Versions of packages firefox-esr suggests:
pn  fonts-lmodern          <none>
ii  fonts-stix [otf-stix]  1.1.1-1
ii  libcanberra0           0.30-2.1
ii  libgnomeui-0           2.24.5-3
ii  libgssapi-krb5-2       1.12.1+dfsg-19+deb8u2
pn  mozplugger             <none>

-- no debconf information