If you are interested in a very solid Linux Distribution with a lightweight desktop (rather than the typical Gnome or KDE desktops), there was very good news for you yesterday. Linux Mint 10 (Julia) LXDE is now available. When I have previously looked at lightweight desktops it has been Xfce, but that seems to be getting slowly but steadily larger and more complex, and I have heard a lot of good things about LXDE recently, so I decided to give it a whirl.
The Release Announcement is rather terse, but it hits the high points in requirements, features and known problems. The Download page contains links to mirrors all over the world. This release is only available in a 32-bit version. As with all of the Mint ISO images, it can be converted to a bootable USB stick using the Startup Disk Creator utility, found in all recent Linux Mint or Ubuntu distributions.
The basic LXDE desktop doesn't look all that different from the standard Mint Gnome desktop:
rest here