Security Question

August 28, 2009 at 10:07:28
Specs: Windows XP
I was sitting at my computer one evening and a window openned and told me my laptop ("name") had just joined the network. Trouble is my laptop was turned off in a case on a shelf. (I checked). I tracked it as an intruder and it immediately went off. I lookedi in the event logs and I see just the day before this started happening, there were many packets sent to my computer and my computer was scanned and pinged a lot. I did a trace and it showed it was from the IANA site. And low and behold, while researching this, McAfee showed on my network map a box with a question mark and the address: It appears that someone has hacked my computer or (computers) and can imitate my laptop. A am using WPA/WPA2, with a 26-digit security code on my wireless network. I am worried and locked the firewall and turned off the cable modem. I wondered if you heard of this before. A full McAfee scan turns up nothing. I am considering taking the network down/apart and rebuilding it using windows. (I have the free (mostly useless) portion of Network Magic right now. Any suggestions would be greatly appreciated. Thank you.

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