Logger Adapter 4.6 Purging Issues


We are facing issues with regard to purging functionality in Logger Adapter 4.6.
We have purging configured to run every 12 hours and purge everything that is 60 days old. We have had this setup for a while now. I do not see the logger adapter deleting anything from the logger tables (ent_activation etc) in Production Env. Can you please suggest what might be wrong? We are running ES 5.0.1, logger adapter 4.6 on HP-UX B.11.11, EI 4.6. Its a production issue and our wm tables size grown up significantly and reaching out of space. We have checked the Adapter Trace also and can see following debug statements about purging:
3:43:54 PM CDT.694 [Debug] Log println
Begin purge
3:44:24 PM CDT.334 [Debug] 0 test broker

3:44:32 PM CDT.218 [Debug] Log println
End purge
But nothing is happening about purging the records

Did any one face this kind of problem
I come to know about the Logger Adapter SP1 , can it help out , we don’t have it currently

Thanks in Advance