Bummer, I was really hoping the traceroutes I sent you with and without the block would help pinpoint the problem. From my end all I see is the timeouts in the browsers at the last leg of the traceroute at the cyberstreet.
As requested earlier in the thread I sent the same info to darjr today so he could check things out on his end.
I'm not sure how often the IPs get changed by my ISP. If this doesn't clear up before long I'll try checking with them I guess.
With many ISPs you can force a change by resetting/turning off the router. Otherwise give tech-support a call -- they can almost certainly force a new one.