It looks like it's not just apport, while uploading (i.e. apport bug report), downloading (apt-get update, apt-get upgrade) it does the same thing. Try using rapidshare.com or filebin.ca In gutsy I didn't have this sort of problems, I had some lag using IRC, but the websites could be resolved fine. (Was there a network flow control in gutsy?) While I was uploading, domains cannot be resolved: $ ping google.com ping: unknown host google.com I tried to visit bugs.launchpad.net: "Address Not Found Firefox can't find the server at bugs.launchpad.net. The browser could not find the host server for the provided address. * Did you make a mistake when typing the domain? (e.g. "ww.mozilla.org" instead of "www.mozilla.org") * Are you certain this domain address exists? Its registration may have expired. * Are you unable to browse other sites? Check your network connection and DNS server settings. * Is your computer or network protected by a firewall or proxy? Incorrect settings can interfere with Web browsing." When it was done uploading: $ ping google.com PING google.com (72.14.207.99) 56(84) bytes of data. 64 bytes from eh-in-f99.google.com (72.14.207.99): icmp_seq=1 ttl=242 time=192 ms 64 bytes from eh-in-f99.google.com (72.14.207.99): icmp_seq=3 ttl=242 time=173 ms 64 bytes from eh-in-f99.google.com (72.14.207.99): icmp_seq=4 ttl=242 time=178 ms 64 bytes from eh-in-f99.google.com (72.14.207.99): icmp_seq=5 ttl=242 time=177 ms 64 bytes from eh-in-f99.google.com (72.14.207.99): icmp_seq=6 ttl=242 time=196 ms 64 bytes from eh-in-f99.google.com (72.14.207.99): icmp_seq=7 ttl=242 time=177 ms --- google.com ping statistics --- 7 packets transmitted, 6 received, 14% packet loss, time 6000ms rtt min/avg/max/mdev = 173.912/182.740/196.574/8.642 ms Using an IP, while uploading: $ ping 64.233.187.99 PING 64.233.187.99 (64.233.187.99) 56(84) bytes of data. 64 bytes from 64.233.187.99: icmp_seq=1 ttl=243 time=7724 ms 64 bytes from 64.233.187.99: icmp_seq=2 ttl=243 time=7929 ms 64 bytes from 64.233.187.99: icmp_seq=3 ttl=243 time=8270 ms 64 bytes from 64.233.187.99: icmp_seq=5 ttl=243 time=9110 ms 64 bytes from 64.233.187.99: icmp_seq=6 ttl=243 time=10126 ms 64 bytes from 64.233.187.99: icmp_seq=7 ttl=243 time=10332 ms 64 bytes from 64.233.187.99: icmp_seq=8 ttl=243 time=10551 ms 64 bytes from 64.233.187.99: icmp_seq=9 ttl=243 time=11920 ms 64 bytes from 64.233.187.99: icmp_seq=11 ttl=243 time=13295 ms 64 bytes from 64.233.187.99: icmp_seq=12 ttl=243 time=12881 ms 64 bytes from 64.233.187.99: icmp_seq=13 ttl=243 time=12695 ms 64 bytes from 64.233.187.99: icmp_seq=15 ttl=243 time=11963 ms 64 bytes from 64.233.187.99: icmp_seq=16 ttl=243 time=12092 ms 64 bytes from 64.233.187.99: icmp_seq=17 ttl=243 time=12036 ms 64 bytes from 64.233.187.99: icmp_seq=18 ttl=243 time=11944 ms 64 bytes from 64.233.187.99: icmp_seq=19 ttl=243 time=12637 ms 64 bytes from 64.233.187.99: icmp_seq=23 ttl=243 time=13486 ms 64 bytes from 64.233.187.99: icmp_seq=24 ttl=243 time=12948 ms 64 bytes from 64.233.187.99: icmp_seq=25 ttl=243 time=12890 ms 64 bytes from 64.233.187.99: icmp_seq=26 ttl=243 time=12800 ms 64 bytes from 64.233.187.99: icmp_seq=27 ttl=243 time=12942 ms 64 bytes from 64.233.187.99: icmp_seq=28 ttl=243 time=12627 ms 64 bytes from 64.233.187.99: icmp_seq=29 ttl=243 time=12091 ms 64 bytes from 64.233.187.99: icmp_seq=31 ttl=243 time=10597 ms 64 bytes from 64.233.187.99: icmp_seq=32 ttl=243 time=9618 ms 64 bytes from 64.233.187.99: icmp_seq=33 ttl=243 time=8639 ms 64 bytes from 64.233.187.99: icmp_seq=34 ttl=243 time=7896 ms 64 bytes from 64.233.187.99: icmp_seq=35 ttl=243 time=7358 ms 64 bytes from 64.233.187.99: icmp_seq=36 ttl=243 time=6416 ms 64 bytes from 64.233.187.99: icmp_seq=37 ttl=243 time=5879 ms 64 bytes from 64.233.187.99: icmp_seq=39 ttl=243 time=5271 ms 64 bytes from 64.233.187.99: icmp_seq=40 ttl=243 time=4514 ms 64 bytes from 64.233.187.99: icmp_seq=41 ttl=243 time=3978 ms 64 bytes from 64.233.187.99: icmp_seq=42 ttl=243 time=3663 ms 64 bytes from 64.233.187.99: icmp_seq=44 ttl=243 time=3603 ms 64 bytes from 64.233.187.99: icmp_seq=46 ttl=243 time=5012 ms 64 bytes from 64.233.187.99: icmp_seq=47 ttl=243 time=5377 ms 64 bytes from 64.233.187.99: icmp_seq=48 ttl=243 time=6393 ms 64 bytes from 64.233.187.99: icmp_seq=49 ttl=243 time=7749 ms 64 bytes from 64.233.187.99: icmp_seq=50 ttl=243 time=8542 ms 64 bytes from 64.233.187.99: icmp_seq=55 ttl=243 time=9854 ms 64 bytes from 64.233.187.99: icmp_seq=57 ttl=243 time=9683 ms 64 bytes from 64.233.187.99: icmp_seq=58 ttl=243 time=9930 ms 64 bytes from 64.233.187.99: icmp_seq=59 ttl=243 time=9858 ms 64 bytes from 64.233.187.99: icmp_seq=60 ttl=243 time=9778 ms 64 bytes from 64.233.187.99: icmp_seq=61 ttl=243 time=9694 ms 64 bytes from 64.233.187.99: icmp_seq=62 ttl=243 time=10061 ms 64 bytes from 64.233.187.99: icmp_seq=63 ttl=243 time=9987 ms 64 bytes from 64.233.187.99: icmp_seq=64 ttl=243 time=9453 ms 64 bytes from 64.233.187.99: icmp_seq=65 ttl=243 time=9818 ms 64 bytes from 64.233.187.99: icmp_seq=66 ttl=243 time=9280 ms 64 bytes from 64.233.187.99: icmp_seq=67 ttl=243 time=9867 ms 64 bytes from 64.233.187.99: icmp_seq=68 ttl=243 time=10266 ms 64 bytes from 64.233.187.99: icmp_seq=71 ttl=243 time=10121 ms 64 bytes from 64.233.187.99: icmp_seq=72 ttl=243 time=10028 ms 64 bytes from 64.233.187.99: icmp_seq=73 ttl=243 time=10371 ms 64 bytes from 64.233.187.99: icmp_seq=74 ttl=243 time=10300 ms 64 bytes from 64.233.187.99: icmp_seq=75 ttl=243 time=10221 ms 64 bytes from 64.233.187.99: icmp_seq=76 ttl=243 time=10129 ms 64 bytes from 64.233.187.99: icmp_seq=77 ttl=243 time=10250 ms 64 bytes from 64.233.187.99: icmp_seq=78 ttl=243 time=10172 ms 64 bytes from 64.233.187.99: icmp_seq=79 ttl=243 time=10127 ms 64 bytes from 64.233.187.99: icmp_seq=80 ttl=243 time=10035 ms 64 bytes from 64.233.187.99: icmp_seq=81 ttl=243 time=10061 ms 64 bytes from 64.233.187.99: icmp_seq=82 ttl=243 time=9968 ms 64 bytes from 64.233.187.99: icmp_seq=83 ttl=243 time=10319 ms 64 bytes from 64.233.187.99: icmp_seq=84 ttl=243 time=10247 ms 64 bytes from 64.233.187.99: icmp_seq=86 ttl=243 time=10077 ms 64 bytes from 64.233.187.99: icmp_seq=87 ttl=243 time=9984 ms 64 bytes from 64.233.187.99: icmp_seq=88 ttl=243 time=10557 ms 64 bytes from 64.233.187.99: icmp_seq=90 ttl=243 time=10407 ms 64 bytes from 64.233.187.99: icmp_seq=91 ttl=243 time=10313 ms 64 bytes from 64.233.187.99: icmp_seq=92 ttl=243 time=10251 ms 64 bytes from 64.233.187.99: icmp_seq=93 ttl=243 time=10157 ms 64 bytes from 64.233.187.99: icmp_seq=94 ttl=243 time=10204 ms --- 64.233.187.99 ping statistics --- 104 packets transmitted, 75 received, 27% packet loss, time 103074ms rtt min/avg/max/mdev = 3603.264/9702.044/13486.009/2308.155 ms, pipe 14 When the upload is done: $ ping 64.233.187.99 PING 64.233.187.99 (64.233.187.99) 56(84) bytes of data. 64 bytes from 64.233.187.99: icmp_seq=1 ttl=243 time=169 ms 64 bytes from 64.233.187.99: icmp_seq=2 ttl=243 time=167 ms 64 bytes from 64.233.187.99: icmp_seq=4 ttl=243 time=169 ms 64 bytes from 64.233.187.99: icmp_seq=5 ttl=243 time=167 ms 64 bytes from 64.233.187.99: icmp_seq=6 ttl=243 time=165 ms 64 bytes from 64.233.187.99: icmp_seq=7 ttl=243 time=170 ms 64 bytes from 64.233.187.99: icmp_seq=8 ttl=243 time=168 ms 64 bytes from 64.233.187.99: icmp_seq=10 ttl=243 time=170 ms 64 bytes from 64.233.187.99: icmp_seq=11 ttl=243 time=167 ms 64 bytes from 64.233.187.99: icmp_seq=12 ttl=243 time=165 ms 64 bytes from 64.233.187.99: icmp_seq=13 ttl=243 time=169 ms 64 bytes from 64.233.187.99: icmp_seq=14 ttl=243 time=168 ms 64 bytes from 64.233.187.99: icmp_seq=15 ttl=243 time=166 ms 64 bytes from 64.233.187.99: icmp_seq=16 ttl=243 time=169 ms 64 bytes from 64.233.187.99: icmp_seq=17 ttl=243 time=187 ms 64 bytes from 64.233.187.99: icmp_seq=19 ttl=243 time=170 ms 64 bytes from 64.233.187.99: icmp_seq=20 ttl=243 time=167 ms 64 bytes from 64.233.187.99: icmp_seq=22 ttl=243 time=171 ms 64 bytes from 64.233.187.99: icmp_seq=23 ttl=243 time=168 ms 64 bytes from 64.233.187.99: icmp_seq=24 ttl=243 time=165 ms 64 bytes from 64.233.187.99: icmp_seq=25 ttl=243 time=170 ms --- 64.233.187.99 ping statistics --- 26 packets transmitted, 21 received, 19% packet loss, time 24999ms rtt min/avg/max/mdev = 165.052/169.257/187.566/4.461 ms