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Microsoft Warns Asian Governments of Linux Suits  SINGAPORE (Reuters) - Microsoft Corp. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=MSFT.O qtype=sym infotype=info qcat=news"&gt;MSFT.O&lt;/A&gt; warned Asian  governments on Thursday they could face patent lawsuits for  using the Linux operating system instead of its Windows  software. 