R12.1: Incorrect GL and subledgers due to corruption

Are you already on R12.1?  Did you know there is a known bug where several reports are not returning subledger journals which requires a patch and datafix?  Visit the MOS article "Corruption in GL Journal Headers Causing Incorrect Reporting in GL and Subledgers" from note ID 1559470.1 to get up to speed on this issue, and make sure that you have applied the required patch!