after installing Safari 5.1 on Mac OS X Lion I found an interesting issue with the browsers. I found that it is not having expected behavior with HTTP basic access authentication as well as server page redirects. I was looking for username and password on the pages which are protected HTTP basic access authentication. Server is sending 301 or 302 header when redirected to that page.
There was no issue with any of the previous version of Safari or any other browser I was using.
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