Apple said a million copies of its Safari web browser for Windows were downloaded in the first 48 hours since the free public beta was made available on Monday 11 June.
However, within three days of launching the beta, Apple was offering a security patches to remedy bugs in the system. Mac users are unaffected by the vulnerabilities and need not take action.
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Chief executive Steve Jobs said Apple "dream big" and wanted to expand the 4.9% market share Safari enjoys.
Speaking at a conference, he said, "We think Windows users are going to be really impressed when they see how fast and intuitive web browsing can be with Safari."
Safari 3 for Windows requires Windows XP or Windows Vista, a minimum of 256MB of memory and a system with at least a 500MHz Intel Pentium processor.
Apple fixes flaws in Safari for Windows >>
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