EXS 24 Logic Sampler Users Group

I have downloaded the marvelous and free Concert Grand Piano gigasampler (http://
exce.ath.cx/~route909/) and converted it for EXS24. It's about 900 Mb of RAM ! (8 
velocity layers, wow !).

My computer has 1 Gb of RAM. So I guess it's just not enough to contain the samples. 
I'm runing Mac OS X 10.2.6 and Logic 6.2.1.

What's weird is that I get terrible cracks everytime I play a note that has not been 
played before. When re-playing the same note, the sound is OK. It's like the EXS has 
not all samples in memory and need to look for them on hard disk when a note is 
played. Using EXS's virtual memory does not change a damn thing.