As an ex-agent one or two things occur to me...firstly, did you pay a deposit to the agent, and if so, ensure that you get it back, and give him a receipt (keep a copy) for it. Give the depoist to the landlord, once he has proved to you his is the landlord and not a con merchant. Invite the landlord to inspect the property and ensure that it is up to his expected standard. Take pictures and date and sign them, to prove the condition is good at a certain date.
As to the agent, yes, another correspondent hit the nail on the head.
Ensure that you sign a new tenancy agreement soonest, check the rent and any clauses about it, and carry on.