xHR response

So I’m trying to use xmlHttpRequest to send parameters to a php page which queries a MySQL db and returns an answer in XML format. I’m pretty familiar with the whole process but when I open a page ( xhr.open(“GET”, index.html, true) ) I get a HTTP 503 response saying that the server could not temporarily fulfill the request at this time. It doesn’t matter what page I try to open, with or without passing any parameters. Any ideas?

Here’s an idea…post more details.

Works for me using Firefox 1.5 on Windows XP.

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