How much ram does the last 1.5ghz pb 12" have on board and what is the max? Is it 256 on board with max only 1.25gbs? That's strange to me. And am I correct that there is only one memory slot open or are there two slots open? And, does anyone know, is the screen the EXACT same size as the ibook 12" because side by side, the ibook looks bigger because the screen sits higher in the air because of the hinge. I'm just worried that I'll be squinting at the small type. Any other thoughts? It seems odd to me that there is so little ram available, when with a new iBook, you can bump it up to 1.5gbs.