Zen 6.5.2 on Netware 6.5.5, Zen Agent 6.5.2 on WinXP, Novell Client

PPM Application is associated with a group of users, icon displays on
the desktop. One member of the group has lost the icon - it was there
previously but no longer shows.

NALDiag shows the PPM app is associated, in the Filter column it shows
Passed (Visible).

The other app which has dissappeared is simply a shortcut ot Groupwise
web access which is associated at a container a two levels above the
user's container and should appear in the NAL Window and on the desktop.

There are other apps showing in the NAL window for this user.

What can I check to find why these icons no longer display?