installation problem

Hi all,

I have a problem while installing the server.

1. I created a user
named 'postgres' and a group named 'postgres' then i extracted the tar file as the root user,
2. I run the pgplus-advsrvr-solaris-sparc_830108.bin as the root user.
3. The installation
script asked a username of a non-root user. I typed the 'postgres' for the user name
4. The
script uncompressed the files and asked the license agreement
5. .Then it asked for the
enterprisedb password
6. But at this time there was an error like 'Database Inıtialization
Failure'
7. I looked at initdb.log file and there is an error of:

initializing
pg_authid... 2009-11-05 10:17:55 EET FATAL: shmat(id=40) faiiled: Not enough space

but
last time it return the code shmat(id=52)

How can i fix this problem,

Thanks