BT5正式版，不是国内一些商家所言称的BT5。

 BackTrack 5 comes in several flavours and architectures. The following page will help you choose the right version for you. Although registration is not required, we would certainly appreciate it - and it would also give us the opportunity to update you when there are important BackTrack updates or news. 

KDE核心：

32位ISO——1.84G
MD5: 4150643026d292717f77ebb83948a034

64位ISO——1.81G
MD5: 80d65610de90ac7ede49b9f7935dfdd2


GNOME核心：

32位ISO——1.91G
MD5: b01a93a916fabb6d1640bd0054428e17

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