Encontre algunos enlaces, mientras alguno de los que alcanzo a descargar el paquete original de GroK.se anima a subirlo.

REVISTAS
http://www.megaupload.com/?d=F2BONE8Z 1
http://www.megaupload.com/?d=LHFRRHVT 2
http://www.megaupload.com/?d=PUR6621U 3
http://www.megaupload.com/?d=N6032PCD 4
http://www.megaupload.com/?d=VTRBXBP1 5
http://www.megaupload.com/?d=BUZ833V6 6
http://www.megaupload.com/?d=5DTZ3M85 7
http://www.megaupload.com/?d=8P7R4WH6 8
http://www.megaupload.com/?d=GSQYD7CF 9
http://www.megaupload.com/?d=OI1QVUTS 10
http://www.megaupload.com/?d=B4NXCMR3 11
http://www.megaupload.com/?d=BXS6FFK5 12
http://www.megaupload.com/?d=ABA46PVN 13
http://www.megaupload.com/?d=8MRZQ8ER 14
http://www.megaupload.com/?d=NJA26W99 15
http://www.megaupload.com/?d=8QQ0PQJV 16
http://www.megaupload.com/?d=3OHIWM6X 17
http://www.megaupload.com/?d=ZMTDEA6A 18
http://www.megaupload.com/?d=O6SYW1PS 19
http://www.megaupload.com/?d=5LOLCCID 20
http://www.megaupload.com/?d=ZAT40D9T 21
http://www.megaupload.com/?d=6MQQVP6M 23
http://www.megaupload.com/?d=X8ZH38TO 24
http://www.megaupload.com/?d=KBZ5NLAK 26
http://www.megaupload.com/?d=ATRJQBI0 27
http://www.megaupload.com/?d=3U4ELTQ8 28
http://www.megaupload.com/?d=10E8RRSI 29



Programas:
http://www.megaupload.com/?d=QOUMHPR0

Charlas TCP/IP:
http://www.megaupload.com/?d=GCLV8J3S

Como's:
http://www.megaupload.com/?d=9V01NDO3

Prácticas:
http://www.megaupload.com/?d=BZ2SNBC1

a mi el ettercap no me ese tipo de problema al escanear una red wifi,
te has fijado en que la interfaz de red este bien?

si lo que quieres es escanear los host de tu red tambien puedes probar con nmap.
por ejemplo:

nmap -sP 192.168.0.1-255

-sP hace ping a los todos los host desde 192.168.0.1 a 255