In privious post,I said the Expeditionpcb need more memory footprint to load data and sometime it reached 2G limit to 32 OS. Jerry anwsered Expeditinpcb now can use 3G memory space. Yesterday, I installed 2007.5 in my new notebook having 2G DDR and 4G swap space, I found Expeditionpcb 2007.5 often run out memory when importing gerber data. If you are using this version, you may check this symptom. Maybe it is a hardware problem, but mostly I think it possibly be the bug of Expeditionpcb. I can't find another pc to install 2007.5 for validating this symptom. If you are working on medium-to-big design, just help me to check it.