From Symantec to McAfee, IT security companies are still spending money on acquisitions in the face of trouble in the U.S. economy. Symantec's move to buy MessageLabs is just one of several acquisition moves by major security vendors in the past few months, including plays by McAfee and Sophos. - Even in a time of economic woes, IT security companies have shown themselves to be unafraid of making acquisitions. The latest example came Oct. 8 from Symantec, which is putting up $695 million to buy security SAAS (software as a service) vendor MessageLabs. Symantec officials said the deal wo... ...