DaveAtIFG - 11:46 pm on Aug 10, 2004 (gmt 0)
Diskeeper on NTFS for a heavily used desktop here. I set it to defrag in the background every few hours on heavily used drives and longer intervals for less busy drives. It has a "self schedule" feature too, based on fragmentation level but I've never used/needed it. I'm very happy with the product.