Hi guys,
same issue here, I have a customer with a small SCCM 2012 R2 with randomly update packages disappearing from the Updates folder. Doing this http://www.verboonSPAM!/2013/08/configmgr-2012-troubleshooting-a-software-update-package/ solves the problem for the missing package, but the problem keeps showing up every week or so....
David Papini
MCT,MCSE