i am using bb bold for more than a month..and has been upgrading os from 125-->162-->167-->185
there different issues on each os but the only problems on each os is sometimes the same person caller names doesn't show up when there is incoming call even though i already saved it on my contact list..
If you have Content Protection enabled, make sure the address book is excluded. Here is why:
If your Bold is locked and a call is coming in, it can't read the address book because of content protection. Only if the Bold is unlocked while the call is coming in or if you have excluded the address book from the protection, it can access the address book and display caller id information.