Same here:

- I always get the message exactly 25 secs after queuing. (Unable to connect to the Duty Finder server. Please try again later.)
- I have tried to log out, exit the game, reboot my computer, and switching classes.
- I have tried to queue for 4 man and 8 man groups on low and high level dungeons and Primals

No DF makes Psylo, please SE, cheer me up :P