Sunday 3rd February at 4.30pm

(Repeated Wednesday 6th February at 7.03pm)


And this week's questions are....

Does Size Matter?

The MacBook Air is Apple's latest, thinnest and lightest ever laptop. Apple's boss Steve Jobs unveiled the new machine at the recent MacBook Expo in San Francisco, claiming that "it's an amazing feat of engineering". The reason why the Air is so compact is that it's data storage is solid state with no moving parts, a bigger version of the flash cards in digital cameras. It doesn't have a CD or DVD drive either, relying instead on wireless connections to import and export data. It may be the latest must-have for Mac Lovers but at a price of £1100 it doesn't come chaep. IT journalist Jonny Evans joins Adam on this week's programme to discuss whether the MacBook Air lives up to its hype.

Do You Believe in the Data Fairy?

Too many of us believe in the 'data fairy' that will magically wipe our hard drives when we get rid of our computers, Dr. Andrew Blyth of the University of Glamorgan tells Adam on this week's programme. In a collaboration with BT and research groups at Edith Cowan University in Australia and Longwood University in the USA, Andrew has been analysing discarded hard drives. He's discovered that 37% of the disks still had sensitive business and personal information on them including salary details, financial company data, bank and credit account details, medical data, pornography, visa applications and online purchasing details.

So, how do you avoid leaving any data on your PC when you get rid of it? mousemat's PC Doctor Simon Zerafa recommends a couple of free downloadable applications: Darik's Boot and Nuke and HDD Erase. Both of these tools are also included in the downloadable Ultimate Boot CD.

Lost?

A lot of people swear by their satellite navigation devices but there are others who swear at them, particularly the residents of St. Hilary in the Vale of Glamorgan when heavy goods lorries, guided by sat navs, kept getting stuck along the narrow road through the village. Fortunately the local council has now erected signs on the main road to warn truckers to ignore their sat nav's instructions to turn off through St. Hilary. Reporter Paul Morris visits the village to find out why you can't always trust technology.

Adam is also joined on the programme by Anthony Hume of Which? magazine to get a few tips on avoiding problems with sat navs and to consider the capabilities of the next generation of devices.


Any problems for PC Doctor Simon Zerafa can be e-mailed to mousemat@bbc.co.uk

The BBC is not responsible for the content of external websites