It does look like you are changing IP address incredibly frequently - you have 1736 IP addresses registered, which appears to be in excess of the number of posts you have made (> 1000).
It actually appears that you have changed IP address more frequently than once per day.
I'm used to cable service, where my IP address rarely changes - perhaps it's different with ADSL, but it does seem excessive. Perhaps your ISP has set a particularly short lease period.
SD