I've been fighting this for a long time. This all started for me at the same time I started using Ubuntuone, empathy and gwibber. For IM I also had Gmail and I started to use Tweetdeck for Twitter. So I uninstalled gwibber and empathy and it went back to one login for a while. Next I found that a login.keyring kept being created. As I've said before changing my default keyring to login and deleting my old default passwords.kingring brought me down to one login again. But low and behold now I occasionally have three logins but mostly only one. Very bizarre. I believe the steps I've taken having impacted the problem in a positive direction but the root cause may still exist. On my laptop, also running 11.04, I've never used Ubuntuone, empathy or gwibber. There I've no keyring logins what so ever.