Forty-six percent of Americans think flying is more dangerous today than a decade ago, according to a Media General-Associated Press nationwide telephone poll of 1,348 adult Americans. And 22% said they thought air travel was safer today than in the 1970s, while 24% said there had been no change. When it comes to delays, 16% of respondents who had flown in the last year said they had frequent problems with delays of an hour or more. Among those who flew six to 10 times a year, one-quarter reported frequent delays. Of those who took 10 to 20 flights, 45% were delayed frequently. And 62% of those who flew more than 20 times a year reported frequent delays.