Has anybody done benchmarks for the power use of the Pentium M vs the new Duo Core in actual use under Linux? Tom's Hardware did some benchmarks but they hit a Windows bug. I know that the same bug won't show up in Linux, but that issue makes it clear you need to look at interactions between the OS and the whole system; has anybody done this?

In general, how good is the power management on Linux now? Can I expect battery life to last as long or longer than Windows, particularly if I add optimizations like spinning down the hard drives?