Faster startup and less memory use for the S60 Java ME VM. Also: "The new architecture allows us to dynamically extend the virtual machine with new APIs" - eg. eSWT.
New java UI toolkit in S60 3rd edition feature pack 2. "eSWT is a cross platform toolkit developed in cooperation [with] Eclipse ... eRCP. ... eSWT shares most of the API with desktop SWT."
Pros and cons of disabling atime to reduce the number of accesses of the disk.
Good summary of the recent hard drive power management scare ("Ubuntu May Be Killing Your Laptop's Hard Drive").