sem5.log still grows out of control even after updates

Hello all, 

I'm running SEPM Enterprise edition and I'm currently on version 12.1.4104.4130

We had the problem where sem5.log was getting very large and using all our disk space. It had grown to 55GB before we noticed it. I followed the instructions on this page and updated SEPM to the version listed above. It was my understanding that doing the upgrade was supposed to fix the sem5.log probem. 

http://www.symantec.com/business/support/index?pag...

However my sem5.log file still grows uncontrollably. It'll reach 40GB in about three weeks time. Is there a perminate fix to this or do I have to recreate the file as outlined in the above link every month or so? 

Thank you for your help.