This happened this same time last year.
Seems that when the forum software gets a bit old the sellers demand that you buy there new improved and when you don't you get hacked and knocked down. I think a lot of time it is those college educated business majors that create the market to upgrade by knowing how to hack their product-and I suspect it is as easy as a backdoor they put in the original design.
Could be a Trumpette or Hillary Rubmy Clitoris folks -the common theme is greedy forum or server providers.
At least this forum works as backup to make sure it was not because I was banned or something.
http://www.isitdownrightnow.com/This checker says that the calguns server is reachable but if I was having a problem it likely was because it was not reachable to me.
If it goes like last time then it will be down for two weeks and all the pictures and links in the threads prior will be dead.
Its a really bad time for all those semiprofessional sellers that bought and are trying to sell for a huge markup right now. I guess they will have to try armslist or Gunbroker in the meantime.