I  some problem about ACL permit on 15.2 , the problem is relate to the bug ID CSCtt19027.Refer as,CSCtt19027 from bug tool kit 1st Found-In15.2T15.2(1.14)T15.2(1.14)T0.115.2(2.1)T15.2(2.2)T15.2(2)T15.2(2)T0.8Fixed-In15.2(2.4)T15.2(2)T0.915.2(1)T2   ...

Hope you complete in soon I am going to replace the chassis 7609 in soon and report you back.My customer very serious about the log. 

I also facing the same issue.I already replace all sup and CK7600.  but still facing.Have someone sloved ?