Need help!!!

I have installed Comodo firewall on my system today. Its a great firewall but i have some issues. I have a MS VPN connection, if i dial for the first time i dont have any issues but if i disconnect the VPN and connect again it fails to connect and i can`t access my VPN server or my network.
To have a connection i have to rebout my system.
Any sugestions?


thanks for make me curious to see what is happening with this great firewall.
I have istaled in VMware and no problem there. so is a conflic with another software.
I think i`ve solved this issues.
Thanks anyway