System will not create adhoc network.

[David Gombos]

  Attempts to do so for about 60 seconds, then gives message "Wireless network disconnected"
The feature worked fine until about 8-9 days ago. I did recommended updates on 29 July and 30 July.
The problem started after that, so I believe it might be a problem with an updated package somewhere.
Perhaps I need to change back to an earlier version of a package, but I do not know which one.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-control-center 1:3.4.2-0ubuntu0.4
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic-pae 3.2.21
Uname: Linux 3.2.0-27-generic-pae i686
ApportVersion: 2.0.1-0ubuntu12
Architecture: i386
Date: Thu Aug 9 11:02:05 2012
ExecutablePath: /usr/bin/gnome-control-center
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
XsessionErrors:
 (compiz:1685): GConf-CRITICAL **: gconf_client_add_dir: assertion `gconf_valid_key (dirname, NULL)' failed
 (gnome-settings-daemon:1652): GLib-CRITICAL **: g_variant_get_int32: assertion `g_variant_is_of_type (value, G_VARIANT_TYPE_INT32)' failed
 (nm-applet:1702): GdkPixbuf-CRITICAL **: gdk_pixbuf_composite: assertion `dest_y >= 0 && dest_y + dest_height <= dest->height' failed
 (gnome-settings-daemon:1652): GnomeDesktop-WARNING **: Timed out waiting for GL_MAX_TEXTURE_SIZE helper
 (firefox:1994): Gdk-CRITICAL **: IA__gdk_window_get_user_data: assertion `GDK_IS_WINDOW (window)' failed
usr_lib_gnome-control-center:
 activity-log-manager-control-center 0.9.4-0ubuntu3
 deja-dup 22.0-0ubuntu2
 gnome-bluetooth 3.2.2-0ubuntu5
 indicator-datetime 0.3.94-0ubuntu2