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Possible Trojan - is it worth fixing?
Hello, it seems like you guys give really good advice so I'm hoping someone can give me advice on my situation. 
I'm letting my friend use my computer at her house. It's sharing a cable modem with her roomate's computer via a router and recently has been having a new problem; Norton's firewall puts up multiple alerts every 30 minutes or so that it's detecting something called an "invalid Destination IP Address" from the local network. I've tried blocking the IP address that's sending up the alerts; the only problem is that the IP address that's sending up the alert seems to be the exact same IP address as my computer.
I've updated and done a scan with both Norton Antivirus and Spybot and found nothing. Do you guys think that this sounds like I have a trojan or spyware on the computer or is it something I can just ignore?
I was thinking of doing a reformat and reinstall of Windows when I got the computer back from her anyway, so if it's something serious it's probably not worth me installing Adaware and Hijack This and trying to overcome my ignorance surrounding computers. ^_^ The only thing that I want from the hard drive is a copy of the internet favorites and it's probably not a good idea to save a copy of those now, right?
Also, I don't know if it's related but lately Firefox is telling me that it can't verify the webpage certificate when I try to log into my hotmail account.
I'm letting my friend use my computer at her house. It's sharing a cable modem with her roomate's computer via a router and recently has been having a new problem; Norton's firewall puts up multiple alerts every 30 minutes or so that it's detecting something called an "invalid Destination IP Address" from the local network. I've tried blocking the IP address that's sending up the alerts; the only problem is that the IP address that's sending up the alert seems to be the exact same IP address as my computer.
I've updated and done a scan with both Norton Antivirus and Spybot and found nothing. Do you guys think that this sounds like I have a trojan or spyware on the computer or is it something I can just ignore?
I was thinking of doing a reformat and reinstall of Windows when I got the computer back from her anyway, so if it's something serious it's probably not worth me installing Adaware and Hijack This and trying to overcome my ignorance surrounding computers. ^_^ The only thing that I want from the hard drive is a copy of the internet favorites and it's probably not a good idea to save a copy of those now, right?
Also, I don't know if it's related but lately Firefox is telling me that it can't verify the webpage certificate when I try to log into my hotmail account.
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