What does 'fluent' mean? Does it mean, "getting by" using just your foreign or second language? Are you fluent if you can carry on a conversation? Does somebody who has an office job and has to communicate with coworkers in their language only, qualify for the title "fluent?"
I do all of the above in Japanese. However, I don't consider myself to have reached fluency. I always run into things I don't know how to express. Every time that happens, it reconfirms to me that my knowledge is lacking. I can surely fix that with a lot of input just by watching TV. But since my focus is on Chinese now, the Japanese can wait.
I bring this up because I recently had a conversation with a Japanese tutor at LingQ. I signed up for a 15-minute 1-on-1 conversation that lasted 25 minutes. At 18 minutes and 40 seconds into the conversation, she stated that I was fluent in Japanese. While I wouldn't say it about myself, I guess she has every right to say it. I've made a lot of improvement in the last 1½ years in my ability to speak.
Here is a small mp3 file of the statement the tutor made. It is about 4 seconds long, in Japanese.