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XHR Issue with Selenium - Firefox

When we try executing our suite on Firefox, there is an issue with the new Selenium 1.0.3 server:
Got result: XHR ERROR: URL = http://www.____.com/ Response_Code = 503 Error_Message = Serrvice Temporarily Unavailable on session b882a11224b7____
This doesn't occur with the older selenium server jar but just the new one.
Root Cause: This occurs mainly due to Open command
If we alter the open command to have its second argument as TRUE...it works!
Reference:
Reference2

Also suggest  that you might want to use the latest version of Selenium RC...RC's 2 and above don't throw the XHR error...

Get the latest RC here.

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