A large proportion of small and medium-sized enterprises in the UK have difficulty with simple IT concepts, according to new research.A study conducted by PC World Business (PCWB) has found that two-thirds of SMEs struggle to understand everyday IT problems, while over a third of small firms lack the sufficient resources to deal with them, startups.co.uk reports.Security issues and viruses are the IT problems most likely to upset the running of a business, according to the respondents. The second biggest problem was software upgrades, as cited by 15 per cent, followed by adding new PCs to the office, as cited by 13 per cent. PCWB's David Gould said: "The results of our survey show many small businesses are confused about what should be, in reality, essentially very straightforward and unproblematic IT issues."The most startling thing about the findings is that the vast majority of these problems could be avoided altogether if the businesses got better IT knowledge and advice in the first place."The PCWB survey, basic IT problems cost 20 per cent of small businesses at least three working hours a week, while a further seven per cent spend an extra working day a week resolving IT issues. © Adfero Ltd