MINEOLA - The Long Island Rail Road had its worst on-time performance since 2005 last year, according to its operating report released today.The report says the goal for on-time performance was 95.1 percent, but only about 92 percent of the trains arrived on time in 2010. The Montauk branch came in at 89.4 percent, Port Jefferson at 90.1 percent and Huntington at 91.5 percent.The LIRR blames the poor performance on the switch-tower fire at Jamaica in August, the tornado that hit the area in September and the Dec. 26 blizzard that halted trains for three days. "We know it's been a difficult year for our customers and we're looking to do better next year," says LIRR spokesman Joe Calderone.