Smart Defrag 1.20 Overviews Operating system: Windows 2003, Windows Vista, Windows Me, Windows Server 2008, Windows NT, Windows 2000, Windows XP, Windows 7, Windows 98 Disk fragmentation is generally main cause of slow and unstable computer performance. Smart Defrag helps defragment your hard drive most efficiently. Smart Defrag not only defragments computer deeply but optimizes [...]