Hopefully this is just a local issue, but I've noticed in recent betas(B6+) Newsbin will start to download, then after a few chunks simply stop. There are no errors, either in Newsbin or wine, and the connections tab just shows "finished". Newsbin isn't locked out, I can quit it and it successfully saves the current download list. I've managed to track it down to the Download tab and painting. If that tab isn't displayed, this problem never happens. No need to disable it - simply have another tab visible over it during download instead. So if you happen to come across this behaviour, that's the workaround for now.
This happened way back in the earliest days of testing NB5 alphas, but went away before v5 ever made it to beta. I'm keeping an eye on it.
DT