Hi there, I am currently using Thunderbird to read USENET posts via news.itgate.net. My problem is that i receive the error - "You have no permission to talk. Goodbye!" - after half an hour (more or less) that i have started Thunderbird. This happen when i don't see any new message in the subscribed groups and i click one of them to manually fetch articles. If i restart Thunderbird, it just works for another (half) hour and then the error pops-up again. I have a Debian server at home whitch is my IPV6 gateway, it runs AICCU and RADVD and provides IPV6 addresses to my LAN. I have already tried resetting the windows IPV6 Interface (netsh int ipv6 reset all) without success and i don't know whether this may be an application/connectivity/windows problem; it seems like Thunderbird thinks i am not connected via IPV6 anymore, while i am. Thanks for your help.