Onyx says disk needs to be repaired?

Hello,

I just ran Onyx a few hours ago, then went out, but it said my disk needs to be repaired. Which is weird because I got the MacBook yesterday and there have been no problems, I have not had to force quit anything or forcibly shut down the mac.

 

Okay, if I run disk utility is there a way to back up all of my stuff? How long does i take?

 

Okay, my MacBook will be fine if I do it tomorrow because I need to sleep now.

 

HAHAA! I'll be able to sleep knowing I'm tired. My mac is running fine, yet I have a problem, how could that be, I will check back in the morning.

 

I'll run it in a few hrs adter school. How long does the backup take from time machine? I have a few songs and 7 new programs. Also 3/4 of zoolander

 

Alright, I am supposed to use time machine right? Would you recommend using an external drive? How big are backup files? Also how do I set yp time machine? It says set up time capsule then it just takes me to airport express utility over and over again. Oh, and now Onyx says my disk is fine..?

 

It won't let me use the internal disk...?

 

But now it says it's fine, should I still do that?

 

Alright, I verified the disk permissions now I am repairing the permissions. Also how can I maximize battery on my MacBook, I like the battery life right now, I have been using it for 1:30 and I hace 77% battery left with disk utility, adium, transmission, limewire, firefox with at least 5 tabs, iTunes and downloaded limwire (all programs running simultaneously except disk utility, just started it). i saw the better battery life option, but does it change the look? Also is my mac supposed to lag sometimes if I have all my programs running at the same time, downloading a video and running disk utulity.