ive been using defraggler to defrag my hard drive. the fragmentation started at 30%, and now it is down to 5% after about 5 defragments. in other words, 8gb of fragmented files. however, no matter how many times i defraged after that, the ammount of fragmented files stayed at 8 gb. in the past 3 or 4 defrags the fragmentation has lowered less than 1%. what is wrong and what can i do to make it defrag more?