OMAHA, Neb. (AP) — The profits of Warren Buffett's company improved 17% thanks to a relatively mild hurricane season and more paper investment gains this year as Berkshire Hathaway continues to prepare for the legendary 95-year-old investor to relinquish the CEO title in January. But last month's $9.7 billion investment in OxyChem won't do much to diminish the$381.7 billion cash pile that Berkshire was sitting on at the end of September even though it is the biggest deal the company has made in years. T ...