Williams Hospitalized With Heart Problems
By John Johnson,  Newser Staff
Posted Mar 4, 2009 9:45 PM CST
Actor Robin Williams speaks to reporters at a press conference for "Campaign For a New G.I. Bill" in Beverly Hills, Calif. on Sunday, June 22, 2008.   (AP Photo/Dan Steinberg)
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(Newser) – Robin Williams' health troubles may be more serious than thought. The 57-year-old entertainer is in a Florida hospital with heart problems, the Miami Herald reports. Yesterday, Williams canceled four shows in Florida after citing shortness of breath, but he planned to be back on tour March 11. Sources, however, tell the Herald he could be out of commission for a while.