to begin, I upgraded several weeks ago to iOS5, and as I like my stuff to be in in folders I tried to download "infinifolders" app. therefore I searched for it, pressed the upper-right corner instantly but I realized it was priced, and what was written is "purchase" not "install", which I cannot do in the first place, because I don't have a credit card neither an account in cydia. then my phone started to crush continuously till I managed to disable that app from SBSettings. now that I wanna delete it, it won't. because it shows the blue "purchase" button and not "modify" button. how can solve this problem?