What version of OS X is on the MacBook? LANDesk does not yet work with Snow Leopard (10.6) which is preinstalled by now on all currently shipping Macs. I'm not sure if this one of the problems/symtoms with 10.6 because we use ARD/Screen Sharing for RC to Macs.
Mac OS X 10.6.2.
I'm not familiar with Mac at all so is Mac OS X 10.6.2 the Snow Leopard version or is it something different?
Yes, Snow Leopard is 10.6.x. LANDesk does not work with it yet and should be removed. You can find the uninstaller in your ldlogon share and I believe it's called ldmacuninstall.sh or something close to that.