I just downloaded FrostWire a couple of days ago and from the start i had the same problem as everyone else with no connection,i kept closing frostwire and restarting hoping that it would get a connection,i guess it's the same as others but sometimes when i open frostwire i noticed that my listen on port would change and just so happen i think i hit the right settings,so i'm posting this for people who have a good connection to post there settings here for others to try not saying that one fits all but aleast it's a start and for those with connection problems try the settings it may just connect,so post your settings here and lets see if it helps if it works write the settings down just in case they change,these are my settings and it's showing i'm behind a firewall but i have excellent connection

listen on port 42023
manual port forward 6346