Hehehe, Sony fail. My second PS3 has been locking up a lot over the past couple of months. This last week it started artifacting and glitching. I called them Monday and they arranged a swapover on Wednesday at my workplace. They hadn't showed by 5, so I called them and they had sent DPD to my house. They were to resend today, to my house (today is my one day off in weeks, I'm not best pleased).
DPD showed up around 13:00 with *two* PS3s, and didn't seem at all bothered by the fact that he was meant to take one away with him in each box. Net result is that he has left me two refurbed PS3s. Ding dong!
Result!!