also tonight, questions about the deal that sent the convicted lockerbie bomber free and home to libya. the brits now say that was a mistake, and the u.s. senate wants to investigate. but questions on everyone s mind was bp involved behind the scenes? and later, the big problem with the iphone 4. is antenna-gate a chink in the armor of the mighty steve jobs? we have a lot to get to tonight, but we begin with our number one story, which of course is oil. the watch word today is cautious optimism. day 88. the pressure is on. can the cap hold back the oil? so far so good. but the president says don t forget, there is still a huge cleanup to do. tonight the prognosis is being described as muted optimism. there is still some concern that the pressure levels are not where they should be. just a short time ago, retired a mirell thad allen said the pressure. to the left is trouble. much further to the right would be ideal. so what are those pressure readings telling us? i