It could be due to the massive traffic we get here every now and again. It's only natural since many people either logged in or not tend to use this site a whole lot to check the latest series for anime.
there will be many many more instances where you wont be able to connect... i've been using this site for about 3 years now and this does happen on occasion (not being able to connect to the site) since this is a resolved issue i'll close this thread.