EXS 24 Logic Sampler Users Group

Hi. My EXS24 hangs when trying to load samples from a Jem Firewire drive 
(Oxford Chip) The drive gets stunned and has to be turned off or else the G4 
dual 1.25 (OSX) also hangs on the drive. This drive has always had my 
samples and in OS9 (and on a G4 400) this never happened. This drive also 
provides audio for Logic 6.2 flawlessly. 
I've noticed posts mentioning EXS24 streaming audio...is that what it does 
now? I thought that it loaded samples into the RAM...has that changed? Could 
this be the problem?
Thanks for your help,
Mitch