Minecraft won't conect to LAN worlds, when I updated to 1.4.2 me an my friend starter a LAN world. The minuet I joined(I was in the world) it said "lost connection" or "connection timed out". When I tried to rejoin the world wasn't in the "scanning for LAN worlds". The same goes for my friend when I was the host.

What I expected to happen was...:
To join the LAN world

What actually happened was...:
It says "connection lost" or "connection timed out" then the option of wich worlds are on LAN Is not there.

Steps to Reproduce:
1. Joined a LAN world
2. The minuet the world appares minecraft says "connection lost" or "connection timed out"
3. LAN worlds don't show up in the scanning for LAN world. The same goes for multiplayer servers.