If your 2008 Form 11 was not submitted by 31/10/09 or 16/11/09 (ROS filing and payment) then it is late. You can be fined a surcharge onto the tax for the year, interest on late payment and ultimately prosecution through the courts. ( see recent Revenue defaulters list at www.revenue.ie for examples)
If your accountant has your accounting records since April there is something wrong. I suggest that instead of ringing him, you call to his office as a matter of urgency.
I think, all things considered that if I were you, I would be waiting at his door tomorrow morning before he opens and insist on an immediate answer on the state of your 08 submission, why it is taking so long and who is going to be responsible for penalties/interest.