Virtualbox USB devices not working on Ubuntu Lucid

There is a known problem between Ubuntu Lucid as host OS and Virtualbox 3.2 when it comes to USB devices. Everything works fine except the USB controller — the devices show up greyed out in the guest OS.

If you have the same symptoms, it is likely a permission problem. Check that your user is a mem[……]

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Wireless Android/pc file transfer with OnAir

I recently bought a new HTC Wildfire and was looking for a way to transfer files between my computer and the phone without needing a USB cable all the time.

OnAir is an Android app that turns your phone into a wireless file server. You install it, start the service, and browse to the IP and port it[……]

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10 reasons open source is good for business

According to PCWorld, Open Source software is good for business for exactly ten reasons. Here is a summary.

Security — The more people can look at the source code, the more likely bugs are found and fixed.

Quality — Open source software generally gets closest to what users want because those users[……]

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Open Source Multimedia alternatives to common proprietary software

A common problem in the “Open Source World” is finding the right software that does a similar job (even exactly the same if you are lucky) to our favourite proprietary.

I’ve just found a nice list of multimedia alternative software, divided by category, which might help you finding the right one fo[……]

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Linux patch to boost Desktop performance

I have been using Linux (Ubuntu is my favourite distribution) for a few years now. I really like it, actually I love it. ;-) Sometimes though I notice that some software is not as fast as its Windows equivalent.

A common culprit was the kernel scheduler. The Linux kernel offers several I/O and CPU[……]

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10 Greatest Open Source Software of 2009

Open Source software was becoming more and more popular in 2009, even though many of these applications were still little known. According to PCWorld, here are ten of the greatest.

Firefox — The open source browser that challenged Internet Explorer and changed the web.

Chromium — The open source p[……]

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Open file graphically as administrator from Nautilus – Ubuntu

Working in the terminal is fine, but sometimes you’re browsing folders in Nautilus and you just want to right-click a config file and open it as root without typing commands. There used to be a package called nautilus-gksu for this, but it was deprecated years ago and removed from modern Ubunt[……]

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Disable directory listing/browsing – Apache

Often, you don’t want your website users to browse the whole content of a public folder. They will still be able to download files from it but not to list all of them for no reason.

This can be achieved in different ways. Here we cover modifying the Apache configuration file directly.

Open your Apa[……]

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Rotate a video with Avidemux GTK

A few times I recorded a video with my camera turned in portrait mode. It looks nice on the camera screen but, as soon as you watch it on the PC, you realise something went wrong… :-|

Fortunately there is software that can fix this. I tried Avidemux and was surprised at how easy it was.

Avidemux[……]

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