Microsoft has released SQL Server 2005 SP3 Cumulative Update 15, which is Build 9.0.4325. There are only six fixes included in this final release. Here is what Microsoft says about the release:
SQL Server 2005 SP3 CU 15 marks the final Cumulative Update release for SQL Server 2005 SP3 during the mainstream support phase of the product lifecycle.
As I have said several times before, it is time to start planning to upgrade to a newer release of SQL Server