my Nokia N8 doesn't tell me who's calling, it just says calling! :( help?

i've gone on settings>profiles>general>personalize>say callers name>on.
i did the same for silent as well because i only ever use them two.
i know it's not the person calling on unknown because i purposely get my friend to ring me when i think i've sorted the problem, and when i lose my phone i ring it off my house phone and it still says calling!:(
please help me!
oh and when i miss a call it just says (in the call log)
MISSED CALL: (NO NUMBER).
there's no option like that.. man this phone is annoying!

i also have the same problem..................