I love Crossover too but I had this same problem with the memory issue. I got it running on SuSE 10.1 months ago but forgot what it was I did! It was a simple thing.
I am playing with it on PCLinuxOS now with the same problem. If I remember the fix I'll post ASAP. I know that doesn't help now but I wanted to give you hope that it can be fixed and runs great!