Login Failed for <domain name>\<Machine Name>

For some reason , the report server is trying to login as <domainname>\<machine name> - its supposed to be <domain>\<user name> or ASPNET or Network Service Authority - I have no clue why it is pickin gup machine name. Any ideas and how to fix?Use a Service account for your report server web identity and app pool in form <domain> \username make sure this user is an admin on DB and on the web server and is also a Member of the IIS_WPG group in the web server

gatharia