I have Teamspeak 3 from January 2013
2013-01-22 17:49:20.586811|INFO |ServerLibPriv | | TeamSpeak 3 Server 3.0.6.1 (2012-06-29 07:59:05)
All work fine until teamspeak released 3.0.8 server and his client.
My client update to new version. Then me and my friend cant conect to server.
I upgrade server to 3.0.8 - nothing.
I change sqllite whit mysql - nothing
delete virtual machine and recreate - nothing
I upgrade server to 3.0.9 and client to 3.0.12 - nothing.

My configuration:
Server : openSUSE-12.2-1.6 on x86 machine
Server start correctly , mysql run ok.
YaTQA work fine.

netstat -lnp | grep ts
tcp 0 0 xx.xxx.xxx.xxx:30033 0.0.0.0:* LISTEN 19352/ts3server_lin
tcp 0 0 xx.xxx.xxx.xxx:10011 0.0.0.0:* LISTEN 19352/ts3server_lin
udp 0 0 xx.xxx.xxx.xxx:9987 0.0.0.0:* 19352/ts3server_lin

On client conect, server log :
2013-09-13 20:43:32.718614|INFO |VirtualServerBase| 5| client connected 'ScarfII'(id:20) from 86.126.0.63:64553
2013-09-13 20:43:57.585601|INFO |VirtualServerBase| 5| client disconnected 'ScarfII'(id:20) reason 'reasonmsg=connection lost'

On client side log :
13.09.2013 23:43:43 ClientUI Info Initiating connection: xx.xxx.xxx.xxx:9987 xx.xxx.xxx.xxx
13.09.2013 23:43:43 ClientUI Info Connect status: Connecting
13.09.2013 23:43:43 PktHandler Devel Puzzle solve time: 21
13.09.2013 23:43:53 ClientUI Info Connect status: Disconnected
13.09.2013 23:43:53 ClientUI Info Failed to connect to server, want autoreconnect = 0

on YaTQA if i do refresh after client start connection i see, along whit my connection,
the user entering in default channel.
After he get "Failed to connect to server" , he leave server.

we are 4 friend and all cant connect.