My wallet is not syncing, 0 active connections,
I am using the libertycoin.conf in OP,
addnode=162.243.90.199
addnode=106.216.171.76
addnode=liberty.suprnova.cc
I had same problem for AGES...
I don't know what fixed it, but I did this.
Deleted everything in Libertycoin.conf (capital L) except this:
addnode=82.231.48.47:55901
addnode=107.170.218.104:55901
addnode=162.243.90.199:55901
addnode=203.195.205.72:55901
addnode=198.50.242.34:55901
addnode=37.187.74.123:55901
addnode=192.99.3.15:55901
addnode=174.51.17.18:55901
addnode=93.103.43.62:55901
addnode=162.243.90.199
addnode=106.216.171.76
Apart from the AppData copy, I also copied it to the directory where LibertyCoin exe was, and other directories inside that.
Relaunched, connected immediately!!!