Well, after reading about 90% of these posts, and after trying Perfect Disk, I gotta say I love it! Does a superb job in defragmenting, i just gotta give the offline files defrag a try! Got a question, for those of you who have got it, I am going to buy it this weekend, so was wondering if it is worth getting the upgrade protection? just over £5 for a year, to get any release within the next year free...how likely are they in releasing another version within the next year?