After reading up for you on possible faults it could be, it is most likely to be a currupt file on your HHD. I would personally recomend (if it is irratating you that much) doing a system restore. If that doesn't clear the problem then I don't know, except sending Playstation an email. If you want to email them anyhow, just ask me and I'll look up their email address for you. I have it on record somewhere as I have needed to email them about a couple of things.
thanks man it works , but i have to fill in a wep-key or something do you know what that is ?
Wep key you have to put in is for your internet security. You must be running your ps3 with wireless internet.The wep key is a fancy name for password.Its so that anyone in range of your signal cant just hop on and use your internet. Whoever has control of your internet,you need to ask them what the password is to use it.