In sarissa i implement the selectSingleNode by appending '[1]' to the 
  xpath expression then calling selectNodes. Maybe MSXML's implementation 
  has the same flaw ;-)

do you wrap the expression in () before appending [1] (you need to)

(/a/b/c)[1]

will select at most 1 node

/a/b/c[1]

will select all c nodes that are the first child of a b.

David

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