It looks like meta.stackover.com is hiding again:
alt text http://www.zygonia.net/content/binary/JustPing-09-09-05.jpg
The UK test shows as ok but my ISP's DNS is reporting not found. In the meantime I've nailed the MSO IP address into my HOSTS file.
status-completed
in hopes that the new DNS servers are more reliable: blog.stackoverflow.com/2009/09/new-dns-provider – Kyle Cronin Sep 20 '09 at 14:06