SQL Server 2005 Service Pack 1 has been released. You can read about all the bug fixes here.
If you have SQL Server 2005 editions for Enterprise, Enterprise Evaluation, Developer, Standard, and Workgroup, you can download the service pack here.
If you have SQL Server 2005 Express, it is a separate service pack and available here.
Filed: SQL Server 2005, Source: David Hayden ( .NET Developer )