Web hosting giant GoDaddy has completed its investigation of the outage on Monday that crippled its site as well as hundreds of thousands that it hosts, and the company has concluded it was not the result of an external attack. This after a member of the hacktivist group Anonymous claimed responsibility on Twitter yesterday, saying he had unleashed a distributed denial of service (DDoS) attack on GoDaddy. Whether or not the site was hacked, though, GoDaddy’s problems underscore the difficulty of running massive web infrastructures that need to serve millions of users. Read the full story at Giga OM.