Cautious optimism is one way to describe the current state of Red Hat (RHT). That appears to be the message from some analysts who follow the provider of open-source software, which is slated to report its fiscal first-quarter results after the market close Wednesday. Analysts polled by Thomson Reuters expect Red Hat to report a per-share profit minus items of 27 cents, up 13% from 24 cents in the year-ago period. Revenue is seen rising 17% to