We have sent i-539 for extension of stay of B2 and the website says it takes 2.5 months to make a decision. It seems from the other threads that people have received a decision after 36 or 48 days from CSC. The 2.5 months is already passed for us and I am afraid of accruing more illegal days. Has anyone had a similar experience? Does anyone know what the cause of the delay could be?