Chasero, I wouldn't have thought it made a difference but have you tried making the 'X" a capital letter rather than the lower case you have suggested above.
I've just been assigned a new HIN because I've changed the trustee on my a/c and its ten characters following the "X" start with "00".
Best to phone your broker.
Yep I've tried all upper case/lower case. Even went to their help which says the HIN is not case sensitive.
I think I know the problem. I have bought the shares on 31 August 2011, and the settlement date is 5 September 2011. That means the share registry has not updated my info yet? I thought it was only 2 days to settle the shares but I guess I was wrong.