I have two Asus all-in-one desktops running Windows XP Pro SP3.
I set one up perfectly for my needs, so I decided to use Clonezilla to clone it's HDD to the other one.
Everything went well, but now when I log into a site (such as Gmail) on one and refresh the page for that service on the other, the other is logged in with the credentials I used on the first computer. Logging out on one logs out on both.
They both have different IP addresses but are behind the same router and I've changed their hostnames since cloning them.
Why could this be happening?
Update - After some testing, changing the SID had no effect, clearing cookies had no effect, yet restoring IE8 to default settings (including user settings) has resolved the issue temporarily (For three days)
What is causing this?