Hi,

I thought i'd give you a quick response (and welcome to NANOG) :).

Thanks. I can't believe that I've already received three very interesting responses in just over an hour ! I've been quietly lurking on NANOG for a while, just plucked up the courage to post ..... and might now even find a bit more courage to attempt to contribute to some threads ! Glad to see the community spirit still exists ! Keep the replies coming if there are any still on their way ..... :) Tim P.S. Valdis Kletnieks ..... I've got the feeling that this ....

That 507 is critically important

if it's true, might potentially explain a few intermittent unexplicable issues we've been seeing at some sites .... time for some research me thinks.... :)