Last night Microsoft released a new cumulative update package (CU #9) for SQL Server 2008 R2. The build # is 10.50.1804 and it contains 26 fixes – some of which, like the new CU for SP1 (CU #2), address access violation and wrong-results bugs. You can download the update here:
And this release was also mentioned on the SQL Server Release Services blog.
Disclaimer: I separated out these blog posts to help alleviate confusion. This update is for SQL Server 2008 R2 RTM (where @@VERSION <= 10.50.1803). It is not for SQL Server 2008, which is a completely separate version, nor is it for SQL Server 2008 R2 SP1 (where @@VERSION >= 10.50.2500).