This and related misbehavior are an ongoing topic on the Questions and Answers forum.
viewtopic.php?f=6&t=48010viewtopic.php?f=6&t=48030Unfortunately there is little information to go on. The problems seem to vary and occasionally resolve, but in general the site does not appear very reliable. The fact that The Management(tm) doesn't seem to be paying much attention is leaving many of us a bit discouraged. There was some sort of problem a week or so ago where networking believed to be outside of PBase had some scrambled DNS servers which seemed to get some attention and purportedly resolved, but there still appears to be numerous things which may not be related to that hanging on by a fingernail. There have been some changes in site behavior going back as far as the end of 2013 (GPS stuff) plus other non-severe but annoying things that have not been addressed in months.
That pretty much exhausts my knowledge of the topic.
DaveT