In Kubuntu 15.10, when abiword is installed due to installing Lubuntu-desktop, every log-in with a Plasma session causes an instance of Abiword to start.
I've been puzzling over this for several weeks since the Parent PID of the abiword process is 1 - init. Abiword doesn't auto-start in the Lubuntu/LXDE sessions.
I finally tracked it down today to one of the kde-telepathy modules, due to an abiword DBus service registration for
org.freedesktop.Telepathy.Client.AbiCollab
$ journalctl | grep abiword
Sep 14 02:01:56 hephaestion.lan.iam.tj org.freedesktop.Telepathy.Client.AbiCollab[6283]: (abiword:6458): GLib-GObject-WARNING **: The property GtkImageMenuItem:use-stock is deprecated and shouldn't be used anymore. It will be removed in a future version.
Sep 14 02:01:56 hephaestion.lan.iam.tj org.freedesktop.Telepathy.Client.AbiCollab[6283]: (abiword:6458): GLib-GObject-WARNING **: The property GtkSettings:gtk-menu-images is deprecated and shouldn't be used anymore. It will be removed in a future version.
Sep 14 02:01:56 hephaestion.lan.iam.tj org.freedesktop.Telepathy.Client.AbiCollab[6283]: (abiword:6458): GLib-GObject-WARNING **: The property GtkImageMenuItem:accel-group is deprecated and shouldn't be used anymore. It will be removed in a future version.
Sep 14 02:01:56 hephaestion.lan.iam.tj org.freedesktop.Telepathy.Client.AbiCollab[6283]: (abiword:6458): GLib-GObject-WARNING **: The property GtkToolButton:stock-id is deprecated and shouldn't be used anymore. It will be removed in a future version.
Sep 14 02:01:56 hephaestion.lan.iam.tj org.freedesktop.Telepathy.Client.AbiCollab[6283]: (abiword:6458): GLib-GObject-WARNING **: The property GtkSettings:gtk-button-images is deprecated and shouldn't be used anymore. It will be removed in a future version.
Sep 14 02:01:56 hephaestion.lan.iam.tj org.freedesktop.Telepathy.Client.AbiCollab[6283]: (abiword:6458): GLib-GObject-WARNING **: The property GtkAlignment:xalign is deprecated and shouldn't be used anymore. It will be removed in a future version.
Sep 14 02:01:56 hephaestion.lan.iam.tj org.freedesktop.Telepathy.Client.AbiCollab[6283]: (abiword:6458): GLib-GObject-WARNING **: The property GtkAlignment:yalign is deprecated and shouldn't be used anymore. It will be removed in a future version.
Sep 14 02:01:57 hephaestion.lan.iam.tj org.freedesktop.Telepathy.Client.AbiCollab[6283]: (abiword:6458): Gtk-WARNING **: Theme directory apps/system-power-actions of theme breeze has no size field
Sep 14 02:01:57 hephaestion.lan.iam.tj org.freedesktop.Telepathy.Client.AbiCollab[6283]: (abiword:6458): Gtk-WARNING **: Theme directory apps/toolbar of theme breeze has no size field
Sep 14 02:01:57 hephaestion.lan.iam.tj org.freedesktop.Telepathy.Client.AbiCollab[6283]: (abiword:6458): Gtk-WARNING **: Theme directory categories/kickoff-menu-tabs of theme breeze has no size field
Sep 14 02:09:24 hephaestion.lan.iam.tj systemd[1]: Received SIGCHLD from PID 6458 (abiword).
Sep 14 02:09:24 hephaestion.lan.iam.tj systemd[1]: Child 6458 (abiword) died (code=exited, status=0/SUCCESS)