Newsday reports that Long Island-based Computer Associates is signing a lease for a new midtown office in Manhattan. The company reassured investors, though, that it will continue to have a "large presence" on the Island. The new 67,000 square foot office at 520 Madison will become the new home for about 120 employees in February. Computer Associates explained the move: "Certainly Microsoft and everybody else has offices here, so it's not out of the question. For most companies, especially those of larger size, there's a need to have a presence in Manhattan."