Version 6.0.6441.0 of SQL Server Management pack, which includes support for monitoring SQL Server 2008 databases, was released to Microsoft’s Management Pack catalog October 29th of this year. It has since been discovered that the discovery scripts fail to discover SQL Servers with databases larger than 32 GB in size. Not only that, once the discovery fails no new discovery will occur. (Discovery worked fine in earlier versions of the management pack.)
A fix has been written for this and tested, but due to delays in getting it posted to the Management Pack catalog, the MOM Team is making the download available from their blog (http://blogs.technet.com/momteam). Once the updated management pack is available on the catalog (http://technet.microsoft.com/en-us/opsmgr/cc539535.aspx), it will be removed from the MOM Team blog.
If you need the fixed management pack immediately, you can download it now from http://blogs.technet.com/momteam/archive/2008/11/13/the-database-discovery-scripts-discoversql200-db-vbs-fail-on-sql-servers-with-dbs-larger-than-32gb-in-the-6-0-6441-0-version-of-the-sql-mp.aspx.