The latest stable release of OSGeo-Live 4.5:
An Xubuntu based bootable DVD, which also includes windows and mac installers. It can also be copied to an 8 Gig bootable USB thumb drive. Verify your download with its md5sum.
osgeo-live-mini-4.5.iso: 3.2 Gig
Same as osgeo-live-4.5.iso, except it doesn’t contain windows and mac installers and can be copied onto a 4 Gig bootable USB thumb drive. Verify your download with its md5sum.
osgeo-live-vm-4.5.iso: 2.6 Gig
Premade virtual disk (.vmdk) suitable for use in VirtualBox, VMWare, KVM and other virtual machine applications. Does not contain windows and mac installers. Verify your download with its md5sum.
For a full list of versions, download options and mirrors visit: http://download.osgeo.org/livedvd
[*] Minimum suggested system resources: 512MB RAM, 1GHz i688 compatible CPU. No hard drive required. Mac users will benefit from a USB mouse.