I'm seeing frequent 503 errors on my site

Hello,

I have been getting intermittent 503 error - service unavailable. Is there anyway you can test the script on the website? Or is it a problem with my internet connection?

I have notice each of these processes are quite slow, with approx 10 seconds of hang time

http://bluedognetwork.info/

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I have contacted my hosting company, they report no issues.

Thanks for your time, much appreciated.