Help me with my problems please.

I have a jailbroken ps3 running on rogero 4.50 cex and everything has been good until recently.

I have been experiencing a lot of freezing issues, and when this happens I have no option but to pull the mains supply out of the back of the ps3.

Also I came to play call of duty ghost today and I loaded multiman as normal and selected ghost. It booted back to the xmb, and I went to select ghost but it was showing the game that I had in the drive ?

Ghost has been working fine since Christmas as I have been hosting xp lobbies.

Any help will be apriciated.

Danny