I just got off the phone with Bellsouth FastAccesss DSL tech support. One of their newer 'things to do' before they will escalate your claim is to have you uninstall your virus protection. Not simply turn it off, but uninstall it. When I asked why, I was told that "at this time the Bellsouth DSL product is not compatible with this third-party software (any anti-virus software)." When I mentioned that this was tantamount to asking people to surf the internet, recieve email, and generally use the Bellsouth network without any form of virus protection, I was assured that most all of the problems they have seen recently were due to virus protection software.
I was also told that Symantec, the makers of NAV, know of the problem. So if I wanted to call Symantec and talk with them about it, I should specifically mention Bellsouth.
I dunno, it seems like Bellsouth is asking for virus-laden computers to ruin their network.
For the record, after 4 hours of callbacks, my DSL service miraculously came back on. Bellsouth contends that is was my computer (even thought all the computers on my network were not able to access the internet - PCs, Macs, and UNIX machines), and they believe that it was probably due to the anti-virus software (even though the software was coexisting nicely with the internet until today, and after I removed the software the internet still didn't work for about two hours until it miraculously came back). I believe that they were having DNS issues in my neck of the woods, and they didn't want to own up to it.