contact names not showing up under SMS

there are a few random text conversations in my SMS app that are showing the contact as a phone number instead of the contact name. these are contacts that have been in my phone for a long time, some in my favorites, some not. i know the names showed up just a few days ago, but now they're numbers instead.

has anyone experienced this?

this is a jailbroken 3GS on 3.0, AT&T.

thanks... josh

 

the iBlacklist update? i don't have that installed. i have no cydia updates at all. i rebooted and that didn't change anything.

thanks... josh