Windows Vista Ready!
The main cause of slow/unstable PC performance is disk fragmentation.
IObit SmartDefrag is the most efficient way to defrag your hard drive. With
our "Install it and forget it" feature, IObit SmartDefrag works
automatically and quietly in the background on your PC, keeping your hard
disk running at its maximum speed. After installation, slow downs,
freeze-ups, and crashes will be a thing of the past. IObit SmartDefrag is
100% free for personal, home and small business use.