Computer Associates International Inc. in Islandia, N.Y., reported strong preliminary second-quarter earnings that fell short of analysts' expectations. ... Maxtor Corp. in Milpitas, Calif., plans to buy Quantum Corp.'s Hard Disk Drive Group, also in Milpitas, for US$2.3 billion. ... DoubleClick Inc. said it's acquiring NetCreations Inc. for $191 million in stock. Both firms are located in New York. ... Geac Computer Corp. in Toronto named William Nelson, its non-executive chairman, as interim CEO following the resignation of Douglas Bergeron. GEAC has initiated a search for a new CEO. ... Excalibur Technologies Corp. in Vienna, Va., and Digital Island Inc. in San Francisco entered a partnership to offer streaming media services. Digital Island will integrate Excalibur's Screening Room technology into its Footprint content-delivery services. ... Eighteen months after Oracle Corp. CEO Larry Ellison pledged to transform the company into a truly Web-enabled business and reduce expenses by $1 billion, Oracle last week revised the figure to $2 billion.