Why do I recieve multiple warnings of "No running instance of xfce4-panel was found" when logging into Xubuntu?

Question

I'm running Xubuntu 11.04, the bootup-time is quite fast but when I log in it takes close to a minute before the desktop is displayed, meanwhile I see no activity on the hard drive. When I finally have the desktop I see this notification repeated 10 times:

and then this one:

In .config/autostart I have these entries

$ ls
xfce4-settings-helper-autostart.desktop

xfce4-clipman-plugin-autostart.desktop  xfce-panel.desktop

$ cat xfce-panel.desktop 
[Desktop Entry]
Encoding=UTF-8
Version=0.9.4
Type=Application
Name=xfce4-panel
Comment=
Exec=xfce4-panel
StartupNotify=false
Terminal=false
Hidden=false

I need some assistance to locate the slow startup, which logs to look at etc.

And then this annoying message about xfce-panel. Where do I look for from where it is started.

Solution

According to the questioner, the problem was fixed after removing the .cache folder in his home directory.

In some cases, as described here, it might be necessary to:

• Log out of xfce
• Log in to a bare terminal (by pressing, e.g., Ctrl+Alt+F1 and logging in)
• Delete ~/.cache (just deleting the contents of ~/.cache/sessions might suffice)
• Return to xfce (usually by pressing Ctrl+Alt+F7)
• Log in

Comments

[Chan-Ho Suh]

Still wondering about this? Incidentally, I don't think you ought to have a desktop file for the panel, not in autostart or anywhere else. There should be no need to autostart it.

[Fredrik Pihl]

@Chan-HoSuh Problem fixed (a long time ago :-) Was due to a faulty cache. Removed the .cache folder and restarted. Problem fixed.

[Chan-Ho Suh]

That's great! Do you mind putting an answer below and marking it solved? It helps clean up the site, even if slightly.

[Edd Barrett]

And for me too.

[Aaron Swan]

This worked as long as I also unchecked the box that says "Save session for future logins" on the logout dialog box.