Sugar OS, a custom Linux user interface that was specially designed for the OLPC XO notebook, is now back with version 2.0 of its Sugar on a Stick. Here’s a refresher course – Sugar on a Stick enables one to run the Sugar OS directly off a USB flash drive on your machine, which is pretty neat since you won’t need to worry about using a netbook/notebook without a proper operating system installed. The new version has been dubbed Blueberry and is built on Fedora 12, bringing more features including Flash support, Open Office 4 Kids, improved wireless networking, an easier keyboard configuration and updated versions of previous installed applications found on earlier versions. Just make sure your USB flash drive has at least 1GB of storage space before proceeding.