The Asset Depreciation Journal Entry is posting to the following open period

The Fixed Assets transactions are posted to the next open period for the following scenarios:
  1. Current period: 'A/R Transactions' is locked
  2. Current period: 'A/P Transactions' is locked
  3. Current period: 'All GL Transactions' is locked
  4. Current Period is closed

For example:
1.Navigate to Setup > Accounting > Manage Accounting Periods
 --AR module is Locked for Period Nov 2011

1. Navigate to Fixed Assets > Transactions > Asset Depreciation
 --Select Asset Type(s)
 --Depreciation period = 11/30/2011
 --Click Depreicate Assets

Result: Asset depreciation journal entry is posted to 12/31/2011.

This is working as per design. The Fixed Assets transactions should be posted prior to Locking any modules for the current period.