Trouble in paradise: President Bush privately admonished Defense Secretary Donald H. Rumsfeld yesterday, a senior White House official said, as other U.S. officials blamed the Pentagon for failing to act on repeated recommendations to improve conditions for thousands of Iraqi detainees and release those not charged with crimes. Bush is "not satisfied" and "not happy" with the way Rumsfeld informed him about the investigation into abuses by U.S. soldiers at Baghdad's Abu Ghraib prison or the quantity of information Rumsfeld provided, the senior White House official said. The president was particularly disturbed at having had to learn from news reports this week about the scope of misconduct documented in an Army investigative report completed in March, according to the official, who refused to be named so he could speak more candidly.