My internet is working fine, I can't sign in to the PSN, is anyone else able to sign in? Right now it's June 8, 2013 at about 10 AM CST.
PSN is not down, no.
Also I'm signed in & playing online right now, the issue must be a 'local' one to you.
Customer Service - 1-800-345-SONY (7669)
Account & billing Support -1-877-971-SONY (7669)
Available Mon to Fri 8am - 8pm PST