But only 10 percent of companies had specific polices to deal with social networking sites, the survey reported.

CNN: Workplace rants on social media are headache for companies

In a statement, David Bell said things had improved since an initial survey in 2002, with managers taking "rapid and specific action" to address the concerns raised.

BBC: NEWS | UK | Education | Ofsted staff say they are stressed

The survey also revealed that younger travellers are much more loyal to specific hotel brands than their elders.

BBC: A growing generation gap among business travellers

An administration official told CNN the sample size of the annual government survey will be expanded to more than 22, 000 teenagers as the more specific questions about smoking habits are added.

CNN: Clinton Orders Survey Of Cigarette Brands Teens Smoke

The recording even shows students being told specific areas in which the university wants to change its "profile" by fixing the results of the survey.

BBC: University staff faking survey