It's not technically defragging the swap. It's removing the swap and defragging the space that the swap will use when it is re-activated. De facto it's the same, but you're right that Windows can't defrag the swap per se. Also, with today's 1+ GB ram systems, the swap is not used nearly as much. For crying out loud, I have 3 different systems using XP with only 256 MB and they don't even use the swap that much. Not to mention that a 7200 RPM drive with an 8 meg cache is a TON faster than the older drives. I have an 11 GB Deathstar that you can know by how long it takes whether or not it needed to use swap. My newer stuff, you can hardly tell.