The recent snapping of optical cable under the sea, presumed to be caused by ship anchoring makes one wonder about the reliability of the networks in place. I also happened to read a Reuters report yesterday, that a total of 5 undersea cables were broken in different places; and that the cause was not really the ships as claimed... weird world!
Update(15 Feb): Well, it seems I'm mistaken about the total number 5. I'd read a report online which I think was from Reuters that said it was 5. Anyway, even if its just 3, the incident had me off the net for 2 whole days, and then real slow for another 2 days.
Update(17 Feb): More news of the report of 5 cables being cut. See here for one such report.