Microsoft Board Cut in Size as a Director Retires  LOS ANGELES (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; said on  Monday that William Reed, one of the company's longest-serving  directors, had decided to retire and would not be replaced,  reducing the size of the company's board from 10 members to  nine.