Hello! I cracked open my new mac mini and replaced the 256mb ram with a new 1024mb ram chip. I followed all the guidelines and researched everything (I thought) but it only seems to read 512 of the available 1024mb? I checked the system specs thing and it says its using 512. Is there anything I can do have it read correctly? Did I order the wrong spec ram? (I ordered 1024mb pc3200 400mhz DDR ram) Thank you very much for any assistance!