Rhythmbox starts every time I start Ubuntu

Please post your ~/.gnome2/session

As I can't attach to support requests (only bugs, it seems) I'll copy and paste it in:
[Default]
0,id=117f000101000114449092400000050520003
0,RestartStyleHint=1
0,Priority=50
0,Program=update-notifier
0,CurrentDirectory=/home/aaron
0,CloneCommand=update-notifier --sm-config-prefix /update-notifier-8hveZ2/
0,RestartCommand=update-notifier --sm-config-prefix /update-notifier-8hveZ2/ --sm-client-id 117f000101000114449092400000050520003 --screen 0
1,id=117f000101000114449092200000050520001
1,RestartStyleHint=2
1,Priority=40
1,Program=gnome-panel
1,CurrentDirectory=/home/aaron
1,CloneCommand=gnome-panel --sm-config-prefix /gnome-panel-9Vh35r/
1,RestartCommand=gnome-panel --sm-config-prefix /gnome-panel-9Vh35r/ --sm-client-id 117f000101000114449092200000050520001 --screen 0
2,id=117f000101000114449092300000050520002
2,RestartStyleHint=2
2,Priority=40
2,Program=nautilus
2,CurrentDirectory=/home/aaron
2,CloneCommand=nautilus --sm-config-prefix /nautilus-4yQPMa/
2,RestartCommand=nautilus --sm-config-prefix /nautilus-4yQPMa/ --sm-client-id 117f000101000114449092300000050520002 --screen 0 --no-default-window
3,id=117f000101000114449523000000050520020
3,Program=rhythmbox
3,CurrentDirectory=/home/aaron
3,CloneCommand=rhythmbox --sm-config-prefix /rhythmbox-aJxvCT/
3,RestartCommand=rhythmbox --sm-config-prefix /rhythmbox-aJxvCT/ --sm-client-id 117f000101000114449523000000050520020 --screen 0
4,id=117f000101000114449092600000050520005
4,RestartStyleHint=2
4,Priority=50
4,Program=gnome-cups-icon
4,CurrentDirectory=/home/aaron
4,CloneCommand=gnome-cups-icon --sm-config-prefix /gnome-cups-icon-nmtBNa/
4,RestartCommand=gnome-cups-icon --sm-config-prefix /gnome-cups-icon-nmtBNa/ --sm-client-id 117f000101000114449092600000050520005 --screen 0
5,id=117f000101000114449092500000050520004
5,Program=gnome-power-manager
5,CurrentDirectory=/home/aaron
5,CloneCommand=gnome-power-manager --sm-config-prefix /gnome-power-manager-ceh8NH/
5,RestartCommand=gnome-power-manager --sm-config-prefix /gnome-power-manager-ceh8NH/ --sm-client-id 117f000101000114449092500000050520004 --screen 0
6,id=117f000101000114449092200000050520000
6,RestartStyleHint=2
6,Priority=20
6,Program=metacity
6,CurrentDirectory=/home/aaron
6,DiscardCommand=rm -f /home/aaron/.metacity/sessions/1144497378-5124-4181195200.ms
6,CloneCommand=metacity
6,RestartCommand=metacity --sm-save-file 1144497378-5124-4181195200.ms
7,RestartCommand=gnome-volume-manager --sm-disable
8,RestartCommand=nm-applet --sm-disable
num_clients=9

So this mentions rhythmbox. What does this mean and why isn't that information in prefs > session?

Thanks for your help Dennis :).

Apart from rb you have a default session. If you remove
~/.gnome2/session it will be recreated the next time you login and you
no longer have this issue. I am still investigating how this happens (it
happened to me once too) and will file a bug when I pinpointed it.

Thanks, deleted :).

If you could let me know (subscribe me?) about the bug when you isolate it, I would be keen to know more about the cause.

I added another task to your bug :)

Thanks :). By the way, Dennis, you were right that, as phrased, the problem belonged in a support request and not a bug :).

Sorry for abusing your support request, but I want to test something.
Please ignore any mails to this request that will be sent from now on ;)

 status Open