I concluded too fast.....I just experimented slow connection to smtp, so I put back the "IP" smtp, which worked fine...... I stay with ipv6 activated, and will report if I experiment delays in browsing....
-- [karmic regression] all network apps / browsers suffer from multi-second delays by default due to IPv6 DNS lookups https://bugs.launchpad.net/bugs/417757 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs