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It seems that Bizhat have become associated with Spyware, and classified as such by WOT (Web Of Trust), perhaps unfairly they also classify all sub-domains in similar way, so there is a real chance anti-spyware software is blocking access to this site.
Perhaps I could sort this out and get us reclassified but the obvious thing to do was to switch hosting, something I wanted to do anyhow.
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