Ok, I think I found bug because I was able to reproduce it. In some situations I found ccSvcHst.exe too active. So instead of rebooting computer I was restarted Norton service and that helped. But after that my Windows Live Mail application wasn't able to see Internet. All other applications are able to connect to Internet only WLM not. To be sure I did it again, reboot computer, checked mailbox regularly and then restarted Norton IS service and after that WLM couldn't saw a Internet connection.
Error from WLM was:
Unable to send or receive messages for the Neobee (mickey72) account. The connection to the server has failed.
Server: 'pop3.neobee.net'
Windows Live Mail Error ID: 0x800CCC0E
Protocol: POP3
Port: 110
Secure(SSL): No
Socket Error: 10061
I have this situation while writing this message and preparing to send it. So you could now my Internet connection really working.