However, if you're going to be running Linux you might avoid the W500 (and T400?) with switchable graphics - the W500 uses the ATI Catalyst and apparently the s

However, if you're going to be running Linux you might avoid the W500 (and T400?) with switchable graphics - the W500 uses the ATI Catalyst and apparently the switching under Linux doesn't work - even if you're running on the Intel graphics the ATI graphics processor is running at 100% with expected impacts on temperature (less effect on battery life, because it's going to go into thermal shutdown anyway). Apparently with the x10 series they switched over to NVidia and I've been told those work better.