WebmasterWorld, which had network problems last month, seems to be having them again. Barry's at SE Roundtable is reporting problems getting there from New York, and I can't reach it as well from the UK nor can Gary from Virginia. The Search Engine World site that WebmasterWorld fell back on last time is working, so watch that if the problem isn't solved quickly.
Postscript: Barry has a note from Brett, WebmasterWorld's owner, that all's fine. Still not for me. Over at the alternative site, this thread is where members are asking and being updated.