is there a time limit on when a crediror can invoke an acceleration clause. i just received a letter from a credit union i owe money to that states that i have not paid since dec. 2005 and they are going to send to collections or pursue legal action against me if i do not contact them to set up an arrangement within 15 days of notice. i think this is an invocation of an acceleration clause, and they intend to sue me. the sol in florida is 5 years, what gives. please help. i do not know if i have that clause in the original contract or not, just presuming.