Try overriding Virgin's provided DNS service and use Google [8.8.8.8 / 8.8.4.4] or OpenDNS http://use.opendns.com/ which has instructions on where to do this. I occasionally switch DNS server when not happy with the momentary speed or connectivity to the outside world [anywhere north/west/east of the Alps]. Enter these IP addresses in your router [which is the only place where I have DNS server IPs entered]

Not so long ago I had a 48 hour out and with ADSL2+ over phone line, had landline, but no internet, the router handshaked with the ISP but zero byte transfer. Came out they'd have to resync something at the switchboard, and suddenly the line was faster than before...

If nothing goes, it's your ISP, if just WCG, maybe it was blackholed because of your maybe higher data transfer on quasi continuous bases. If you have the possibility to change provider, get ugly.

Had a trial DUMeter on my 8 core laptop and made it filter to only monitor traffic to WCG's IPs. Did 12GB in February [28 day month]. Have a fleet and GPU crunch at 12 concurrent on a card, it gets serious. The longer a task runs, the more efficient BW use becomes, as output files tend not to grow linear, if at all.

edit: It's actually ADSL 2+

Thanks again guys. Still no joy so far but I'll look at your suggestions later on today.

Rob, re your mention of a dialup meter. Have you tried Netmeter beta? It's free and although it's no longer being developed and beta, it is mature and
has almost all that Dialup Meter has. It's available from Softpedia.

I'm still getting used to superhub and have taken my own firewall box out of the link until this WCG issue is resolved.

Back to Rob, I am being subtly pastry with Virgin. I started a new contract with Virgin by getting more HW from them and renegotiating at a lower price. More for less, go figure . I have stipulated that I can pull out if they cannot i my WCG issue an
d they have agreed that if they cannot fix it or it happens again after the fix, that I can pull out without any questions bring asked.

I'm just frustrated that all these powerful GLUe are sitting file while I shiver without the welcome heat they used to produce

Set a bunch of extra log flags in cc_config.xml to analyze http/https/proxy/file transfer... maybe the ca-bundle security check part gets mangled by Virgin, meaning they changed something. Of course, if there are firewall software on top of that in your router/NAS it could get ugly [was it updated?]. Similar the AV might be doing damage since some unannounced engine/signature lib update. Make both to exclude all the IPs [there are about 6 collected in a knreed post].

Added: That was a quick find... there's 7 IPs used including harvard: https://secure.worldcommunitygrid.org/forums/wcg/viewpostinthread?post=338077

Hope this gives more clue, or at least, determination by elimination.

One of the flags to set is <proxy_debug>1</proxy_debug> to find where things stumble. Few more:

<http_debug>
<http_xfer_debug>

The much hated RTFM actions to be applied here: http://boinc.berkeley.edu/wiki/Cc_config.xml

Good Luck.

(I'm so happy with me fallback high speed USB dongle, by Vodafone of all. Sadly there's a monthly BW limit, so doing result reporting for CEP2 would become prohibitive)