It is an exploit if, had it been done against an M$ product or *nux, you'd be calling it an exploit.

It is a hack if, had it been done against a M$ product or *nux, it would be a hack.

It is a bug and complete disregard for security if, had M$ done the same thing, you'd be calling it a bug and complete disregard for security.

So ... if the default is to share the whole drive ... then it is it is clearly a severe security exposure and illustrates complete disregard for security on the part of Morpheous and Kazaa's authors.

If there a warning pops up when a whole logical drive is shared, then that is good coding and everything reasonable has been done that can be done to safeguard the user.

If it just lets you make a change to the configuration that shares the whole drive without issuing a warning or caution, that is okay (just okay).