Synchronization for Shared Services Provider Failed

I ran in to:

Synchronization for Shared Services Provider ‘[your shared service provider]‘ has failed. The operation will be retried.
Reason: Collection was modified; enumeration operation may not execute.
 

And to solve it I did the following:

stsadm -o sync -listolddatabases 1

This gives us a list of databases that has not been syncronized for 1 day. You can change the values if you want to check further back in time.

stsadm -o sync -deleteolddatabases 1

This sounds scary right but it actually just deletes the record to the databases.

Restart the Windows SharePoint Timer Service

stsadm -o execadmsvcjobs

Hope it might help someone to quicker solve the issue.