Easiest way to get that space back is here -
link.
From KOP website, easy to follow instructions, you'll have to re-image the classmate and update/activate everything, which is a pain, but even our classmate runs better after we did it (1gb ram + <800MBs of space left = page file errors).
PS: Don't mind Alan, he's just a bit...prejudice against the poor Classmate.
