Browser data visible on 2 PCs

[LakotaLuna]

I setup a home network with workgroup of 3 PCs and 2 laptops, 1 PC XP Professional wired, 2 PCs XP Home (1 wired 1 wireless), both laptops XP Professional wireless. I just switched the XP Home (wired) to XP Pro to install Linux. I use ZoneAlarm Security Suite on all except the PC I just converted to XP Pro on which I have AVG Internet Security. I using a 4-port Linksys wireless-G cable Gateway (WCG200 v2) router/modem connection, ISP is Comcast.

I had 2 system up, one XP Pro w/ZoneAlarm Security Suite (PC1) and the other XP Pro w/AVG Internet Security (PC2). I was ordering something online on PC1 when ZoneAlarm stopped me indicating the site I was on might be a phishing site. I turned to PC2 and pulled up the site. Everything (all my personal info) I had typed into the PC1 showed up on Pc2. BIG BREAK IN SECURITY. I never noticed this before and don't know what I could have done recently to cause this.

Where did I go wrong? How do I ensure what is typed into a browser on one machine doesn't appear on another. I'll be adding another PC (windows 7) to this network in about a month that I'll used just for personal stuff. PC1 and PC2 will be used for business. The laptops are used by family and friends.

Thanks!

 

[scaye]

You don't have a form fill program on do you?

 

[LakotaLuna]

No, I don't have that box check though I did have username and favorites turned on in IE. But I use Firefox, so I don't think they are connected.

 

[scaye]

Only other thing I can figure is that they temp stored your data via IP address, and when you came back into their site on a computer connected to the same IP they filled in your data.

By what you are describing that's what it could be.

 

[LakotaLuna]

IP addresses are different. I cleared the all history/cache on both machines and tried again. Same result.

 

[sturm]

Your EXTERNAL ip that the web site sees will be the same no matter how many INTERNAL ips you are using. As far as the website knew it was getting a request from the same IP address that just filled in the data, so it sent that data along with the web page reload.

I have to try this at home sometime and see if it works.