Comment 10 for bug 425881

I just want to comment that my experience fits Marcus' explanation above. After upgrading to Karmic SCIM stopped working, so I googled a bit and found out about iBus. I opened the preferences for iBus and got the same message about iBus not being started, asking if I wanted to start it. After clicking yes the keyboard icon appeared in the notification area.

Later after logging out and in again the icon disappeared and the language panel wouldn't appear. I tried uninstalling everything scim-related and unselecting then reselecting the languages but nothing helped. Finally rebooting made it work again.