I am not sure about blocking . At least 10 of my friends and many of iranian who I know that applied months after me they got there passport . I dont know what is the problem . And what the reason of the delay.It's a matter of backlog. Many of my Lebanese friends got their citizenship in less than 8 months before the backlog started building up. Now, most applicants in GTA, especially Mississauga, are suffering from delays. All my Mississauga friends who applied in Feb and March last year, including myself, haven't received any test invite yet.