Problems downloading Windows updates through update manager

Recently we've had an issue when tryong to download Windows updates through update manager, I've gone through the logs and dug out the line which is showing the error, but I don't know a lot about SQL or how the database is meant to be set up. Has anyone got any help for me?

[2013-04-19 14:09:16:416 'VciSigUpdateTask.SigUpdateTask{4}' 3944 ERROR]  [vciSigUpdateTask, 1038] Error downloading new Windows updates: "ODBC error: (23000) - [Microsoft][SQL Native Client][SQL Server]Violation of UNIQUE KEY constraint 'UK_VCI_PLATFORMS'. Cannot insert duplicate key in object 'dbo.VCI_PLATFORMS'." is returned when executing SQL statement "INSERT INTO VCI_PLATFORMS(creation_time, family, locale, name, version) VALUES (?, ?, ?, ?, ?)"

Any help will be appreciated.

Thanks in advance