Jeff Zucker, the chief executive of NBC Universal, told the company’s employees in an e-mail Friday morning that he would step down from his position upon the completion of the takeover of NBC by Comcast. 
 
 Peter Kramer/Associated Press 
 
 The fate of Mr. Zucker, the longest-serving senior manager at NBC, had been the subject of widespread speculation since Comcast agreed in December to purchase 51 percent of NBCU from its long-time corporate owner, General Electric. The deal is expected to close at the end of the year, following regulatory approval. 
 
 In an interview at NBC’s executive offices, Mr. Zucker, who is 45, said the decision to leave the only employer he has ever worked for — a decision that he acknowledged was not his own choice — became inevitable after a meeting two weeks ago with Steve Burke, Comcast’s chief operating officer. 
 
 “We had both gotten to the same place,” Mr. Zucker said. “He made it clear that they wanted to move on at the close of the deal and I was completely comfortable with that.” 
 
 Even as he said he accepted the logic of a new owner seeking to install its own chief executive, Mr. Zucker also described his departure as both “incredibly emotional” and “gut-wrenching in the sense that you have spent your whole life here at NBC.” 
 
 In the face of persistent rumors that Comcast would seek to remove Mr. Zucker the first chance it got, Mr. Zucker had said in previous interviews that he had in no way foreclosed the possibility of staying on. G.E., which retained 49 percent of the company, had done its part by locking Mr. Zucker into the position, awarding him a new three-year contract seven months ago that was designed to take him into and past the takeover by Comcast. 
 
 “Look, I knew from the day this was announced that this was a possibility,” Mr. Zucker said. “I wasn’t going to shut the door on anything. But in the last nine months it became increasingly clear that they did want to put their own team in place — and I didn’t want to end up being a guest in my own house.” 
 
 While he often faced withering criticism in Hollywood circles for his leadership of the entertainment division of the NBC network — in his note to the staff he mentioned the “ups and downs” the company had experienced — Mr. Zucker said he did not detect “any particular reason” beyond the broad desire for new leadership for Comcast’s inclination to make a change. 
 
 Jeffrey Immelt, the chairman of G.E., praised Mr. Zucker’s performance at NBCU, saying, “In my opinion he has never gotten as much credit as he has deserved.” He added, “I love Jeff: I’d hire him again.” 
 
 As for the change at the top of NBC, Mr. Immelt said that was to be expected. “It’s natural when you have a change like this,” he said. 
 
 Mr. Zucker called the media company that he is leaving behind “well positioned,” with most of its assets in strong financial condition. Last year NBCU generated about $2.3 billion in profits, 80 per cent of which resided in the company’s cable division. 
 
 NBC’s entertainment cable channels, headed by USA, Bravo, Syfy and Oxygen, recently posted their most profitable year for a fifth year in a row. Mr. Zucker also said CNBC, the financial business channel, and the all-news cable channel MSNBC, had logged record profits as well. 
 
 He also cited strong years from NBC’s theme park division, an improving forecast for Universal Pictures, a comeback in profits for the local television stations owned by NBC and the ratings dominance of every news program on the NBC network. Mr. Zucker noted that NBC had acquired both The Weather Channel and Oxygen on his watch and had worked closely with the Fox network to create the now heavily trafficked video website Hulu. 
 
 One of his proudest achievements, he said, was the management team he had put in place in the various cable channels and divisions of NBC. Asked whether that management team would stay in place under Comcast, he said, “I certainly hope so, but I don’t know for sure.” 
 
 But Mr. Zucker conceded that his legacy at NBC would be colored by what he called “the rap on me,” which has centered on his failure to solve chronic problems in the most high-profile (if not the most high-earning) part of the NBC empire, the prime time hours on the broadcast network. 
 
 “Do I wish we’d had more success at NBC Entertainment in recent years? Yes, of course,” Mr. Zucker said. He acknowledged one recent widely publicized blunder, the effort to shift NBC’s late-night star Jay Leno to prime time. He said the move had been a risk worth taking, but one “that simply didn’t work out.” 
 
 Asked to identify the biggest mistake of his tenure, Mr. Zucker said, “The thing I regret most is not moving quickly enough” to fix NBC Entertainment. He said he detected some glimmerings of a turnaround in prime time this fall, though “we have a long way to go.” 
 
 On the other side of the personal ledger, Mr. Zucker said the highlight of his career remained his days producing the “Today” show, which catapulted to unchallenged leadership and record profits during Mr. Zucker’s two stints as executive producer. He called that “the most fun job I had” and added: “In my heart I am a producer.” 
 
 Mr. Zucker assumed the “Today” job for the first time in 1992 at the age of just 26, one of 10 positions he held during almost a quarter-century at NBC. (Mr. Zucker displayed a framed tower of his old business cards presented to him by one of his staff members. The bottom card listed him as a researcher for NBC’s Olympics; the top one as chief executive.) 
 
 “Ronald Reagan was president when I got here,” Mr. Zucker said, adding, “I’m O.K. with this, but it’s also very emotional and very tough.” 
 
 He said: “I’ve spent over half my life at NBC. This is the only place I have ever worked. I’ve been here 24 and a half years. I met my wife here. My four kids were born while I was here. I’ve endured colon cancer twice. It’s going to be incredibly strange for me personally” to leave. 
 
 As for his future, Mr. Zucker said: “I don’t know. I never really thought about it because for 24 and a half years I only thought about this place. I have a lot of interests, producing, politics, sports, business.” 
 
 Friends have previously suggested Mr. Zucker might try to enter political life. “Am I interested in politics? Yes,” he said. “Is it something I am going to do right away? No.” 
 
 Despite previous speculation that he has long had an exit deal in place, Mr. Zucker said he had only completed the details on his contract settlement Thursday. He did not disclose financial terms of his settlement but said, “Nobody has to worry about me; I’m good.” He will stay on until the deal closes, he said, because Comcast can not exercise management control until it wins regulatory approval. 
 
 “Am I disappointed it’s coming to an end?” Mr. Zucker said. “Sure. Am I disappointed with them? No. I understand it. They spent billions of dollars. It’s the way it goes.” ||||| Well, the time has come. This time, to tell you a little news about me. 
 
 When Comcast assumes control of NBC Universal, I will leave the company. 
 
 It has not been an easy or simple decision. I have spent my entire adult life here, more than 24 years. This is the only place I have ever worked. The only professional thing I have ever known. I met my wife here, enjoyed the birth of our four children in that time, worked in almost every division of the company. And forged relationships, both professional and personal, that will last a lifetime. 
 
 I remember, vividly, the first day I came to work here in August, 1986. I walked to work at 30 Rockefeller Plaza that day; it was humid and my shirt was soaking by the time I got there. In the years since, I have enjoyed nothing but sheer pleasure in having the names NBC and Universal on my business cards. Sure, there have been ups and downs in the last quarter century. But when I step back, and think about what we’ve been through, I feel nothing but pride and joy. It has been a great run and I’ve been incredibly fortunate. 
 
 Now, it is clear to me that this is the right decision for me and for the company. Comcast will be a great new steward, just as GE has been, and they deserve the chance to implement their own vision. 
 
 I am proud that they will inherit a company in very good shape, with almost every one of our divisions enjoying their best year ever. The current strength of the company is a tribute to every one of you and the terrific leadership team that is in place. 
 
 We’ll talk more about the shape of the company in the months ahead. For now, I just wanted you to know my plans. I won’t be going anywhere until the day the deal closes, and that day is still months away. There is plenty left to do, and we have an obligation to each other to maintain what we have already built. I will continue to approach everything we do with the long-term interest of the company in mind, just as I always have; I know no other way. 
 
 I don’t yet know what my future will bring. I’ve spent the last 24 years thinking only about NBC Universal, and never contemplated anything else. I haven’t even begun to think about the next chapter. But I wanted to be honest with you about this news as soon as I could. 
 
 I love NBC Universal. And always will. And I am grateful to each of you. 
 
 My most heartfelt thanks. ||||| The Atlanta Journal-Constitution 
 
 CNN has replaced Jon Klein, the head of its U.S. network. 
 
 In a memo Friday, CNN Worldwide President Jim Walton said Klein is being replaced by Ken Jautz, who currently runs HLN, formerly the Headline News Network. 
 
 The original cable news network has been struggling in the ratings, trailing both top-ranked Fox News Channel and MSNBC. 
 
 Klein has emphasized CNN's straight-news brand as its rivals moved towards more opinionated talk lineups. Jautz oversaw a transformation at HLN, switching it from a straight headline news service to a news and views format. 
 
 The timing of the announcement is striking. 
 
 Klein just overhauled CNN's prime-time lineup, replacing long time talk host Larry King with Piers Morgan and launching a new show featuring former New York Gov. Eliot Spitzer and Kathleen Parker. The show debuts next week. 
 
 "Jon has made important contributions to the CNN story and he leaves with our respect and friendship," CNN Worldwide president Jim Walton wrote in a memo to employees Friday morning. 
 
 He called Klein's successor "a rarity -- a working journalist who is an even better news executive. The reinvention of HLN is the latest in a string of successes he has led at CNN." 
 
 Klein also wrote a memo to staff. "The CNN I'm leaving today is demonstrably stronger than the one I inherited almost six years ago -- both editorially and financially," he wrote. 
 
 "That is a tribute to your passion for telling stories that matter, your talent for uncovering the truth without layering on destructive bluster or partisan spin , and your willingness to indulge my appetite for innovation and change." 
 
 Despite its ratings problems, CNN has emphasized its profitability across multiple platforms. 
 
 Friday's announcement suggested that the network plans to expand on that. 
 
 In his memo to staff, Walton said the network would hire a managing editor for CNN Worldwide, who will "shape and connect newsgathering across networks, shows and websites." 
 
 He said the search for that person is under way.
– Oft-criticized NBC Universal president and CEO Jeff Zucker will leave the company when its acquisition by Comcast becomes official. Zucker made his decision public this morning in an email to NBC employees acquired by the Wall Street Journal. Though he says it wasn’t his choice to leave, he calls it “the right decision for me and for the company.” The Comcast takeover is expected to close by the end of the year. Zucker tells the New York Times it became obvious at a meeting 2 weeks ago Comcast “wanted to move on at the close of the deal and I was completely comfortable with that.” He also says the departure is still “gut-wrenching in the sense that you have spent your whole life here at NBC.” What will he do next? “I don’t know,” says Zucker, 45. “I never really thought about it because for 24½ years I only thought about this place.” In other media management news, Jon Klein is out as head of ratings-challenged CNN.