Ok

 - I've tried it with my vodafone dongle... (so I'm not using my normal wifi router at all)
 - I've tried /home/nick/bitcoin-0.3.17/bin/64/bitcoin  -rescan -noirc -upnp -addnode=64.31.38.250-addnode=74.82.216.10 -addnode=178.63.62.15 -addnode=173.224.125.222 -addnode=91.85.220.84 -addnode=91.85.220.84 -addnode=173.224.125.222 -addnode=86.5.50.90 -addnode=178.255.199.86  (and innumerable variants therof)
- I don't think I have a firewall running at all. Unless Ubuntu is craftily running something that I don't know about
- I'm not going to upgrade my whole operating system just to get bitcoin to work
- I'm not going to use windows.

Although I guess I could boot into windows, install bitcoin, copy the wallet.dat across, download the blocks and then copy it back.


This is kindof a pain in the arse though - it has managed to download 133905 blocks. It's just jamming up now for reasons I know not.