BUZZ-OpenText Corp: To buy Actuate Corp
** Canadian software maker's shares up 2.5 pct at C$67.76
** To buy California-based software company Actuate Corp for $6.60 per share or $330 mln in cash
** Offer at 89 pct premium to Actuate's Thursday close of $3.50
** Actuate stock up 87 pct at $6.55
** Up to Thursday's close, shares of OpenText had risen about 36 pct this year on the Toronto Stock Exchange, Actuate stock had fallen 54 pct on Nasdaq
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