Hello. I am using Windows Live Messenger 2009 on Windows 7. I am using a 3G modem (ZTE Propietary USB Modem)

I connect to the Internet using a software my ISP provided me. In last three days, my Messenger started to disconnect.

Here is what I observed and tried to do:

1- I can browse web, can do FTP transfer etc. and obiviously have a valid IP.

2- I can sign in to Messenger (appear offline) but when I change my status to anything other then appear offline, Messenger says my connection to service has been lost. (However, it exists.)

3- When I run, MSN Connection Troubleshooter, it says my IP is invalid. When I click repair, it says repaired and just after that, I run the troubleshooter again, and it says my IP is invalid again. (However, it is valid and I am browsing the net.)

4- If I connect the Internet through eterhet or wireless there is no problem at all.

5- I re-installed Messenger (deleting all settings manually through registry and folders), re-installed all drivers and software related to USB 3G Modem. It doesn't work. And then, I took a full backup then formatted entire computer, installed a fresh windows 7, after 5 minutes, the same problem occured.

What do you recommend? What can I do?

Addition

As seen on screenshot, it says Server IPv4 adress is 0.0.0.0 It seems like a problem, I don't know if it is. If it is, how can I solve it?

Here is what I get, when I netstat.

PPP adapter TTNET internet:

Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 217.174.39.122
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 0.0.0.0

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : ege.edu.tr

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 16:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 13:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter 6TO4 Adapter:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 9:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 11:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 12:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 14:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 17:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 25:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 20:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 18:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 19:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 22:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 21:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 15:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 23:

Connection-specific DNS Suffix . : IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e74:2448:3909:2a2c:eb7b
Link-local IPv6 Address . . . . . : fe80::2448:3909:2a2c:eb7b%30
Default Gateway . . . . . . . . . :

Tunnel adapter Local Area Connection* 24:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter isatap.{CFFCFEDB-6B53-42E0-B091-548B9ADE9C9D}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 26:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 27:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 29:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 31:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 28:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 32:

Connection-specific DNS Suffix . : IPv6 Address. . . . . . . . . . . : 2002:d9ae:277a::d9ae:277a Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301

Tunnel adapter Local Area Connection* 30:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter isatap.{157CF713-B3AC-4701-87A9-14C23CA60AAB}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter isatap.ege.edu.tr:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter isatap.{0D3CD01B-0993-4B37-89B8-12557ECF484D}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :