Trying to give something back to the Community...
I'm trying to upgrade my SMS 2003 SP2 Central Site to SP3. However, the installation fails with a dialog box stating:
"Systems Management Server Setup cannot continue because of the following error: Setup cannot upgrade the SMS database. Contact your SQL administrator" [19/10/2012 - The WMUG Link Below No Longer Works - Please click HERE to access the Article]
Read the complete post at http://wmug.co.uk/blogs/cliffs_blog/archive/2010/07/29/sms-quot-sql-error-lt-08s01-0-microsoft-odbc-sql-server-driver-communication-link-failure-quot.aspx