i have Kanguru Mini Drive (1GB) USB Flash Drive,i have store around 512 mb data in that drive. Its not showing up anymore in windows vista and xp and just shows it as a 600MB drive no matter what I do. what happend to rest (400 mb) this happend for the frist time. i formated it to see any change but still i am geting 600 mb only. What has happened and what is the solution?Can anyone help!!!