Can you speak more than one language?

[konnichiwa]

Dutch It is now almost my native language.
French Normally my native language but I lost it a bit thx to living in a Dutch city.
German  Not that well but I can understand it for the most part.
Chinese (Mandarin)  Well I can speak it a bit more than basic. 
Japanese (Kansai-ben) I am losing it though.
English:   Some say I have problems with it but      I have no problems with my English, it are the English native speakers who have a problem with my English.

Wanted to learn but just not had time for it:  Spanish/Russian/Korean/Italian.