According to zone-h.org the attack against Sony BMG websites was carried out by one defacer, presumably from Turkey, who signed using the nickname "LuCky_Luke".
The Warner attack was performed by a crew of defacers who come from Chile, known as "byond hackers team". That attack seemed to come from people who don't like capitalism much. µ
Though it's not exactly an even playing field
Biz machines offer of Intel CPUs and AMD or Nvidia graphics
Thermal throttling is hampering the overclockable chip's performance
Firm is making its Lightning port even more locked down