Best Buy and Circuit City will have a $600 core duo laptop on sale starting Oct 1st.
Toshiba M115-S3094
specs:
Toshiba Intel Centrino Mobile Technology Notebook
Intel Core Duo Processor T2050
Windows XP Media Center Edition 2005
512 MB DDR2 RAM Memory
80 GB HD
Reads & Writes DVDs & CDs
14” TruBrite widescreen
Model M115-S3094