phantomjs hangs and wait for data

Hi,

i use phantomjs to shot many website screens. Since 22/06/2016 sometimes phantomjs hangs and is waiting for incoming data. I don't know why? After killing phantomjs and restarting everything works fine until the next hanging.

From 21/06/2016 to 22/06/2016 the followings packages are updated:

base-files:amd64 7.1wheezy10 => 7.1wheezy11
dpkg-dev:all 1.16.17 => 1.16.18
dpkg:amd64 1.16.17 => 1.16.18
libdpkg-perl:all 1.16.17 => 1.16.18
libldap-2.4-2:amd64 2.4.31-2+deb7u1 => 2.4.31-2+deb7u2
libldap2-dev:amd64 2.4.31-2+deb7u1 => 2.4.31-2+deb7u2
libpython2.7:amd64 2.7.3-6+deb7u2 => 2.7.3-6+deb7u3
python2.7-minimal:amd64 2.7.3-6+deb7u2 => 2.7.3-6+deb7u3
python2.7:amd64 2.7.3-6+deb7u2 => 2.7.3-6+deb7u3
tzdata:all 2016c-0+deb7u1 => 2016d-0+deb7u1

Does everybody know, if can be there a connection between the updates and the hanging of phantomjs?

How can i install an older package and disable the automatic update service in the turnkey lamp for testing?

Thanks g.g.