On Firefox facebook keeps opening sessions and asking if I want, "Ubuntu would like to post to your friends on your behalf."

[KL Burkholder]

Every few minutes firefox opens and new session for facebook with the Ubuntulogo that says, "Ubuntu would like to post to your friends on your behalf."
Ubuntu 13.04
Even if Firefos is not open, it opens it and does the above. Please tell me how to make this stop.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: firefox 21.0+build2-0ubuntu0.13.04.2
ProcVersionSignature: Ubuntu 3.8.0-22.33-generic 3.8.11
Uname: Linux 3.8.0-22-generic i686
AddonCompatCheckDisabled: False
ApportVersion: 2.9.2-0ubuntu8
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: kl 1965 F.... pulseaudio
BuildID: 20130512193902
Channel: Unavailable
Date: Fri May 24 10:45:35 2013
EcryptfsInUse: Yes
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2013-04-02 (51 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
IpRoute:
 default via 192.168.1.1 dev wlan0 proto static
 169.254.0.0/16 dev wlan0 scope link metric 1000
 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.12 metric 9
MarkForUpload: True
PrefSources: prefs.js
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=21.0/20130512193902 (In use)
RelatedPackageVersions:
 totem-mozilla 3.6.3-0ubuntu6
 rhythmbox-mozilla 2.98-0ubuntu5
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: Upgraded to raring on 2013-05-03 (20 days ago)
dmi.bios.date: 04/11/2006
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02
dmi.board.name: 0TD761
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA02:bd04/11/2006:svnDellInc.:pnLatitudeD620:pvr:rvnDellInc.:rn0TD761:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude D620
dmi.sys.vendor: Dell Inc.