If you signed in yesterday and noticed that you could sign in and could use every service ok, you were legit. Sony appears to have suspended the maintenance of the PSN that it announced a few days ago. Some reports are saying it was because of the PS Vita HBL exploit. It is said that Sony is looking into this exploit so that they can patch it, or remove the game off of the store until it does get patched.
Anyone have some more info on this to back this up?