Dueling Network

is there a limit for the number of people in the DN or something?

No, why?

I've been d/c left and right. so now i know it's my piece of junk laptop.

There is a limit of sorts, but only if you are inactive for a while. They do this so the thing won't slow down too much on so many people online at the same time, so they kick idle players.

I'd get d/c while I'm constructing a new deck or when I'm in the middle of a duel.