The problem with gerdb's solution is that optimization doesnt put the large stuff at the beginning, just anything it wants kinda closer to the front, which isnt good enough.
Your disk is very full. I'm sorry, but the trick will not work with a very full disk. I guess you will have to wait for JkDefrag v4.
p.s. You can attach pictures to a posting right here on the forum, no need to upload to another website.