Strange about nero

Well I posted this topic before.

Burn something with nero
do not finalize Cd

when I finally want to finalize the cd without any data,
I tick finalize and write and say burn
After about 2 min its done, butttttttttttt for some reason it has not done finalize, coz I can still burn struff on it after this process.
I have tried this process three times still with the same result. Now left with two cds without being finalised. I am desperately trying to explain this situation with Nero 5518