Missing Contacts Tab

I recently restored my 5.5g iPod. Everything is as normal when I plug it in, but the contacts tab is missing.

The normal tabs such as summary, music, movies etc. are present but there are no options anywhere for calendars or contacts.

Before I restored the iPod they were available.

 

Didnt really want to. My laptop only has usb1.1, so it took about 15 hours to sync it last time. Do you have any other suggestions???
Thanks anyway.

 

its an old powerbook g4 15" titanium.

 

Its re-appeared. I thinks its because I was running panther. I always used to sync my iPod from my G5 running Tiger. My laptop only had panther on. Now that ive upgraded it, the contacts tab has emerged.