Comment 4 for bug 1176903

I ram that command, and it only immediately exited. It's supposed to remain as a background process, but it looks like that's been broken for a long time, or the status hasn't been updated (https://code.google.com/p/chromium/issues/detail?id=58083).

If you want, you can delete that from the list of startup applications, although I don't think that will solve your problem. Is it going to a particular site?

You might also want to try deleting everything in ~/.cache/sessions/, although it's a thin possibility (http://askubuntu.com/questions/125718/how-can-i-stop-terminal-and-firefox-from-launching-on-startup)