iis on xp does not start The server {A9E69610-B80D-11D0-B9B9-00A0C

[alex]

When I try to start iis I get 2 errors

Tipo evento: Errore
Origine evento: Service Control Manager
Categoria evento: Nessuno
ID evento: 7024
Data: 21/02/2010
Ora: 11.39.32
Utente: N/D
Computer: D630
Descrizione:
The IIS Admin Service service terminated with service-specific error
2148073478 (0x80090006).

and

Tipo evento: Errore
Origine evento: DCOM
Categoria evento: Nessuno
ID evento: 10010
Data: 21/02/2010
Ora: 11.40.02
Utente: D630\Administrator
Computer: D630
Descrizione:

The server {A9E69610-B80D-11D0-B9B9-00A0C922E750} did not register with DCOM
within the required timeout.

If I right click on a folder to see the space allocated, it takes 15-20 sec
to respons and on the registry the two events are logged
I've checked registry permission on key
{A9E69610-B80D-11D0-B9B9-00A0C922E750} that refer to iis admin
I've tryed to reset premission under service and component, config dcom
I've checked the permission and files
under.....Microsoft\Crypto\RSA\MachineKeys
and everything seems to be fine, but I still get this error.
What else can I try?
Thank you
Alex