Whats the longest you have been on a DMP

I'm not with Payplan, CCCS or anyone else, but I've been paying reduced payments (interest is frozen) on multiple loans and credit card accounts since 2001/2002. Over that period of time, I've increased the payments - sometimes because they've asked, other times voluntarily.

My debt-free date is ... well, you can see in my signature. This is based on my current paymnets, and snowballing them as I finish paying accounts.