What could cause this? I wonder what the technical problem is.
In this case however, it seems to be an L3/CL-specific bug.
Edit: Looks like i would have guessed wrong :P. Still want that inside scoop!
Also used a company that over the years has gone from Genesis, GlobalCrossing, Vyvx, Level3 and now of course Level 3 is CenturyLink, which has been fine.