Haven't updated the image yet. Comes next.I'm always using wired connection via dhcp (easiest solution) and no problems. If you don't use dhcp you need to set all parameter including netmask in ip and gateway/nameserver.
Please login over ssh and see if you stay logged in.Then check withps aux | grep tierif server is running and when it was started. What you say sounds like the computer running server is reachable but server it self stops receiving communication. One reason would be if it crashes. You should also install 0.94.1 - if you are on latest image all you need to do when logged in over ssh is runinstallLatestServeror use the autoupdater if it already sees the update.
pi@Repetier-Server:~ $ ps aux | grep tieravahi 356 0.2 0.2 6396 2836 ? Ss 02:13 0:00 avahi-daemon: running [Repetier-Server.local]
repetie+ 2014 18.3 1.2 38720 12104 ? S<sl 02:15 0:00 /usr/local/Rep etier-Server/bin/RepetierServer -c /usr/local/Repetier-Server/etc/RepetierServe r.xml --daemon
root 2025 1.0 0.3 5580 2912 ? S 02:15 0:00 /usr/bin/sudo /usr/local/Repetier-Setup/bin/manageWifiAccess scan
root 2040 1.0 0.2 3008 2348 ? S 02:15 0:00 /bin/bash /usr /local/Repetier-Setup/bin/manageWifiAccess scan
ps aux | grep tier
sudo apt-get updatesudo reboot