I had one brief 503 error yesterday or the day before on the home page. When I tried again it was okay.
Don't know about today because I had bad connectivity. In the past I've had many times when I lost connectivity to the net for an hour so and could never trace the problem. I switched modems and pc and still got the error. ISP denied any problem. Been alright this year until this morning. Damnest thing. I could google. I could get lots of websites. But many were 'can't connect with server' - BBC news, Daily Telegraph, FFN, and others, plus my email was down. How can only part of the web be unavailable? I even wondered if it was a major cyber attack on the web but googling for news in the last 24 hours showed no major problems like that.
[sigh] Anyway, just ranting because, I couldn't confirm 503 error today because of connection errors! Some days it seems like nothing works. Anyway, finally got my emails and connection back.