"They're probably jealous," Cluck said. "Everybody is going to be able get in and out easily. So I don't pay any attention to that."  But former Super Bowl MVP Kurt Warner called the city "unprepared" to handle the nation's biggest sporting event in the wintry weather.  "When you drive around here right now, there's nothing going on," Warner said. "It's like the city is dead, which you don't expect Super Bowl week."  NFL Commissioner Roger Goodell was a bit more diplomatic, saying the city faced "a few challenges that we didn't expect, weather-wise."  The big game will be played in Cowboys Stadium -- a domed arena with a retractable roof.  Ice and snow slid off the stadium roof Friday and caused injuries to workers below, authorities said.  Gusty winds on the south side of the stadium sent ice falling up to 50-60 feet from the stadium, striking contract employees, according to fire department officials.  One man was struck in the head by ice and was in stable condition at John Peter Smith Hospital in Fort Worth, said Lt. Pedro Arevalo of the Arlington Fire Department. Five other men and women had minor injuries, he said.  All stadium entrances have been closed except for an adjacent truck tunnel, which workers and visitors will exit through as a precaution, said NFL spokesman Brian McCarthy.  "The ice should be melted off tomorrow," Arevalo told CNN Friday night, describing the hard freeze as extremely unusual.  While Dallas Fort Worth Airport was open, although with reduced traffic, neighboring Love Field Airport in Dallas was closed until Friday afternoon, officials said.  In Dallas, icy roads forced schools and some government offices to close earlier this week, said mayoral spokesman Frank Librio, who appeared undeterred by the weather.
A deep freeze across the South appears to have dampened the pre-Super Bowl fun for fans gathering in the Lone Star State.Salt spreaders and plows rumbled through Arlington, where sub-freezing