http://askubuntu.com – This problem is annoying me for 2 weeks! Unexpectedly, after migrating to Ubuntu I can't upload any thing via ADSL, also I can't send any comment in weblogs. The odd point if I use proxy/ant-ifilter (as in Tor or FreeGate) I can upload normally!! The upload is just my problem; Downloading files and opening pages are ok! Also when I use GPRS (mobile internet) I don't have any problem!!! There' (HowTos)