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Most Ultrabooks provide scant connectivity, but not the Latitude E7240; it’s stuffed with an abundance of ports and features. There are three USB 3 ports, mini-DisplayPort, HDMI and a Gigabit Ethernet socket dotted around its edges, and Dell has also added a fingerprint and smart card reader. You can cut costs by specifying Dell-branded single-band 802.11n Wi-Fi, but our range-topping review unit came equipped with an Intel dual-band 802.11ac chipset, Bluetooth 4, NFC and 3G.The Latitude's stereo speakers are superb, with audio quality that's as good as any laptop we’ve reviewed, and light years better than most business models.The internet has given rise to new crimes – from hacking and bank fraud to eBay scams – but it’s also created a new kind of troublemaker: the accidental criminal.No-one would be surprised by an early-morning knock on the door if they’d hacked an online banking site, but the reach of the web means it’s never been easier for otherwise well-behaved citizens to break the law inadvertently.Neither the law nor common sense have kept pace with a world in which social networks and file-sharing sites changed the legal landscape. More importantly, people who previously had no means of libelling a celebrity or breaching contempt of court rules can now do so simply by hitting Retweet. We’re all a click away from accusations of harassment or causing gross offence.

Laws are applied with a varying degree of severity, which further clouds the issue of just what will or won’t land you with a spell at Her Majesty’s pleasure. Even if you think you’re no law-breaker, there’s a good chance that even our most honest reader has broken some sort of law online, whether by ripping a CD or using a song or photo without permission, even if it’s by mistake.Nowhere is it easier to break the law than on Twitter or Facebook, partly because people who are untrained in libel laws are now publishers, and subject to the same controls as newspaper editors – who are (theoretically) trained in media law.Twitter is so short and instant, so much about the heat and the heart of the debate, that it’s a temptation for people to tweet too quickly without considering the consequencesTwitter is so short and instant, so much about the heat and the heart of the debate, that it’s a temptation for people to tweet too quickly without considering the consequencesOften, we see Facebook and Twitter as extensions of a pub discussion, where banter and alcohol-enhanced opinions are routine but ephemeral. Online, however, our comments stick around and spread quickly, potentially reaching a wider audience than intended – sparking a “Twitter storm”.

“Twitter is so short and instant, so much about the heat and the heart of the debate, that it’s a temptation for people to tweet too quickly without considering the consequences. There could be contempt of court, defamation or data-protection issues,” said Kathryn Wynn, a senior associate with tech law firm Pinsent Masons. “We’ve seen real-world examples of this... people can’t substantiate a tweet as they don’t have any evidence. In the heat of the debate, people don’t go away and check, because the debate would have moved on – so they don’t stop to think.”It’s because of incidents like this that a social network user could find themselves facing court. Several trolls have served time, and libellous posters have had to dig deep to pay damages.Despite the grave consequences, the authorities are still coming to terms with how to deal with Joe Bloggs gaining a platform to air opinion and humour. Look at the farcical trial of Paul Chambers, who was found guilty of sending a menacing message when he jokingly threatened to blow up Robin Hood Airport near Doncaster after it was closed due to snow, though later acquitted on appeal – common sense and law don’t always mix.

Since that case, Crown Prosecution Service (CPS) guidelines have laid out where prosecution for harassment or web threats is justified, focusing on whether threats are credible, how persistent the harassment is, and the level of offensiveness.In its guidelines on when to prosecute, the CPS says most Twitter rant cases shouldn’t go to court, even if the post involves “the expression of unpopular or unfashionable opinion about serious or trivial matters, banter or humour; even if distasteful to some or painful to those subjected to it”.Desktop PC and laptop shipments came to only 2.5 million units in the UK during the first three months of this year, down almost 16%. It appears that the UK PC market is slowing faster than other parts, with Gartner already putting the global decline at 11%.Overall in Western Europe, shipments fell more than 20% from 15 million to 12 million units, with every manufacturer bar Lenovo and Apple seeing significant drops in what Gartner describes as the region’s "worst quarterly decline" ever.Gartner analysts again blamed the drop on Windows 8’s unpopularity among consumers, who appear to be puzzled by the system’s touch-friendly UI.

"The first quarter of 2013 brought the worst quarterly decline in Western Europe since Gartner started tracking PC shipments in this region," said Meike Escherich. "Wide availability of Windows 8-based PCs could not boost consumer PC purchases during the quarter. Although the new Metro-style user interface suits new form factors, users wonder about its suitability for traditional PCs — non-touchscreen desktops and notebooks."Meanwhile, China’s Lenovo managed to bolster its position considerably, with a 21% jump in shipments –making it the third-biggest manufacturer in the UK.First-placed HP saw shipments fall by a quarter, while Dell’s fell 11%. Gartner said Lenovo’s growth helped prop up enterprise PC sales in the UK, which fell by 7.6%. By comparison, consumer demand fell by 24%. And although Apple saw fractional growth more widely in Western Europe, it didn’t feature in the UK’s top manufacturers, with Acer and Toshiba rounding out the top five."Lenovo's strong performance in the first quarter of 2013 prevented the professional PC market declining faster," said analyst Ranjit Atwal.“While the professional PC market continues to see the importance of the productivity gained from using a PC, consumers attribute much less value to the use of PCs," added Atwal.

Toshiba first showed off its glasses-free 3D laptop as a concept back in February - and the company has now put flesh on those bones, giving it a name, launch date and a price. At a press launch in central London, Toshiba announced it would be shipping the Qosmio F750 to UK retail outlets in August.3D laptops are nothing new - we've seen quite a few in the past couple of years - but the difference with the Qosmio F750 is that it features a lenticular 3D display, which means you benefit from the full 3D effect without having to don a pair of uncomfortable specs. Although a little on the grainy side, the demo videos Toshiba showed us exhibited an appreciable degree of depth. You can view both 2D and 3D material onscreen simultaneously plus, in a clever twist, you don't have to be facing the dead centre of the screen to see perfect 3D.The laptop's webcam tracks the position of your eyes, adjusting the screen's lenticular lens layer accordingly. That worked well, although the effect wasn't instantaneous, with a slight lag as the screen adjusted itself to new eye positions.The chassis itself is nothing to write home about. The bright red plastic lid and carbon-effect interior look smart, but the laptop itself is thick and chunky. But the Qosmio F750 does back up its clever 3D tricks with an interesting specification.

The CPU is a 2GHz Intel Core i7-2630QM accompanied by 6GB of DDR3 RAM, while Nvidia's mid-range (but still fast) GeForce GT 540M powers the graphics. For audio you get a pair of Harmon Kardon-branded stereo speakers, storage comprises a 640GB hard disk, plus there's a Blu-ray XL drive built-in - a first for a laptop as far as we're aware - allowing you to write to optical discs up to 100GB in capacity. On the rear, a coaxial aerial connector suggests the laptop will ship with an integrated TV tuner, and the F750's 15.6in screen is a Full HD unit.A bigger catch, however, is that, to grab yourself some of this juicy new 3D technology, you're going to have to splash the cash. The F750 is set to cost around £1,300 inc VAT when it launches in August, a price which looks set to restrict the Qosmio to 3D enthusiasts only.There are many good reasons to defrag your hard disk in Windows 7, and the same goes for Windows XP, Windows Vista and Windows 8. In this guide, we explain how to defrag in Windows 7, why you may want to, and how to set up a regular defrag routine.It’s always good to know whether or not the defragging process made any difference, so the first step is to set your baseline. Make a note of how much hard disk space you have, run a quick benchmark to see how well your hard disk is performing – a tool such as HD Tune works well – and make a note of the results.

The theory behind defragging your hard disk is that it should make some difference to load times for files. By default, Windows will save files in fragments across the disk, and each time you load a file it dynamically rebuilds them. A defrag tool will rearrange the data to make it quicker, again we’ll emphasise theoretically, because your file is in one place.We’ve seen the biggest post-defrag improvements to boot-up times, so you might want to measure this. We’ve used several tools over the years, including Boot Racer, but in reality a stopwatch timer (and ensuring your PC is set to boot straight to the desktop) works perfectly well for our needs. Just time from pressing the on button to your Windows 7 desktop appearing.The good news is you don’t need to download a third-party defrag tool: Microsoft includes the perfectly respectable Disk Defragmenter in Windows 7. Type “Disk defragmenter” into the search box and click on Disk Defragmenter, which will appear automatically unless you make a typo.

You’ll see a window containing a number of disks, something like this. Note that although scheduled disk defragmentation is typically turned on by default, it may be set to a time such as 1am every Monday – great if you leave your PC switched on at that time, not so great otherwise.Click on the “Analyse Disk” button. This process shouldn’t take long, and you can stop at any point. You’ll soon be told just how fragmented your disk is. In our case, it’s only 4% fragmented. Microsoft suggests defragging if that figure hits 10% or over, but we’ll press ahead anyway.This process will take considerably longer, perhaps hours. The good news is that you can still keep on using your computer whilst defragging takes place, so don’t worry on that front.So the minutes and hours have passed, and Disk Defragmenter assures you that all is well: your disk is 0% fragmented. Has the defragging made any difference? We doubt that you’ll notice much in practice, which is where those records from step 1 come into play.3D laptops are nothing new - we've seen quite a few in the past couple of years - but the difference with the Qosmio F750 is that it features a lenticular 3D display, which means you benefit from the full 3D effect without having to don a pair of uncomfortable specs.


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