can someone tell me why some people have big bugs in the game on the xbox.and others like me almost none.are the discs not good or is the xbox bugged.

Individual Xbox machines can have a problems over time due to vibrations (i.e. you're a pre-school gamer who spazzes out in tantrums every time your fragged). That said, some people keep their machines in enclosed cabinets (very bad) and don't vacuum them out regularly (ditto). Such things can change the experience regardless of console age/updates.

I did not had any bugs issue until last night. I was fighting a Sable Tiger and when I killed it end up as two wolfs, and had 2 Sable Tiger attacked me and when I was done with them only one of their remain was around. That was really odd.