It's not a question of how long you play; the issue is when a player is disconnected the game will sometimes not let you back on for 5-20+ minutes.

Error 3102 is associated with your character already being logged in.

I sometimes go 8-12 hours (full day) without DCing once. Other days, I'll get booted ("error on the game server") several times in just an hour or two. It almost always takes me minimum 4-5 minutes to be able to log back in. Not because my internet was down (or ever is), but because the game thinks my character is already logged in.


I hope that clears up any confusion.