How to Track Package Permission Change

[msp_cognos]

We have seen issues in our current Cognos 10 environment, where we have encountered occasional Package permission drops, which prevents users to suddenly lose access to Reports which they run on a daily basis.
We have quite a few Administrators in our environment, and also we use SDK to provide permissions, and I am guessing we are getting on each other's way to set up the Permissions.

We wish to have a visibility of when a particular Cognos Group's permission to a Particular Package is being changed.

Can someone help me with some Content Store Query, or point me to some SDK functionality which would do the same for me ?

[Grim]

Auditing using Audit DB should do this.

[msp_cognos]

Thanks...will check that out