Zenworks 2 Slow application launch

I have been using ZFD 2 for ages :-) Just to roll out icons for
applications

All of a sudden, NALEXPLD takes a very long time to display the icons
(2 - 5 minutes) and about the same amount of time to launch an
application.

I'm wondering if this is due to an update in the NWC - we're using 4.91
SP5 plus patches

Has anyone seen this ?

Steve