Because of the volume of spamming going on right now it's affecting the login process. He has to shut it down, clean up the php file, and then activate it again. (That's why sometimes you're on, and sometimes you're not) He's searching for a permanent solution. Feel free to share this with anyone you know who's having problems. It will be intermittent for a while. I would suggest using the back-up board which is on another server if you really need to contact someone quickly about something for sale, etc. Use both boards - read this one and talk on that one if you wish until this is resolved. Here's the link to it:
http://nabeagle.proboards.com/
You don't have to be registered to use that board, but for common courtesy, please us your name, or the name everyone knows you by.
