We've noticed since moving to Zenworks 6.5 SP2 a few days' back, after
the SP2 installs and folks reboot, the Zen apps start reinstalling to
the machine again (after they have been there for so long). I noticed
one other post that might indicate there are issues when moving to the
SP2 environment.

Also if you go into properties of Application Explore and review the
data under Advanced Application Launcher Information, we have several
apps (see attached). We've noticed there are several that last run
time and associated time, a few are filled in that are loaded on the pc
and several others do not have a date/time stamp and they are loaded on
the pc. What is going on??