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When it comes to running Firefox on Windows, the dreaded "Firefox is already running" error message when trying to launch the browser on the system is highly annoying.

This happens under certain circumstances, usually when the Firefox profile is still locked on the system while a new instance of the browser is being started.

This happens for instance if Windows tries to start Firefox while the previous instance of the browser has not been terminated (yet) correctly.

Windows users have several options when it comes to launching applications or opening files on their system. From placing programs in the system's taskbar, on the desktop or start menu, to using the start menu or browsing to the location on the hard drive manually.

The main idea behind application launchers is to speed up that process. Ideally, all you have to do is enter what you are looking for in the program's interface to load it right from there.

Instagram is a popular mobile application that enables you to create and share photos and videos. Part of the service's success comes from its social networking components and adaption by celebrities.

Some of the appeal of the application comes from the fact that you can follow other users. If you want to see the latest public photos or videos of Justin Bieber, one of the Kardashians or The Rock, you can do so easily using the app.

One of the most annoying things on the Internet are auto-playing contents. This can be a video that suddenly starts playing with or without sound, a bright flashy ad that makes you dizzy just by looking at it, or audio-only contents.

Not only can this be highly irritating considering that it is not always clear where audio may be coming from, but also because it is distracting and may impact the load of the system as well.

As a webmaster, you not only have to make sure that the right contents are displayed to desktop users but also that mobile users are served correctly.

This can be a big issue considering that you cannot possible test all possible operating systems, browsers and screen resolutions these devices use, at least not without emulation or some software help.

One of the first things I do when I install Windows is to personalize the operating system afterwards. On Windows 7, this means switching to a basic theme and changing the default wallpaper of the system in the process as well.

While it is possible to pick pictures locally, for instance from your digital camera photo archive or previously downloaded wallpapers, you sometimes may want more options and choices.

Todo Backup Free made our top drive backup list recently. EaseUS, the company behind the product, has released version 7.0 which introduces several new features and improvements.

The backup program is still available as a free version that you can use for the majority of backup related tasks. While there are Home and Workstation editions available that are not free, they add only features to the application that are usually not requested by the majority of users.

There are so many ebook formats out there that it is difficult to keep an overview of them all. While some formats are more popular than others, pdf and epub are for instance more popular than lrf or txtz, it is safe to say that you that ebooks will be made in different formats to you.

That's a problem. Not only because your ebook reader may not support all of the formats, but also because of how contents are displayed.

One solution that you have is to convert ebooks to a preferred format which resolves all the issues that you would face otherwise.

I listen to non-fictional audiobooks usually when I'm out of the house and not music which most other smartphone owners seem to prefer.

That's the main reason why I don't stream music, be it from a service such as Google Play or Internet Radio, to the device as well.

If you have different preferences, you may find Audials for Android interesting. The application makes available more than 63.000 radio stations from all over the world that you can tune in right away and even record to your device.

Back in the good old days, when you wanted to share something, you used email, messaging clients, IRC, the Usenet or forums for that.

Today, sharing is all about sites like Facebook, Twitter, Pinterest or Google Plus where you share pages and services that you like to friends and complete strangers.

Most webmasters maintain one or multiple social media accounts for their sites and share updates on those social sites to spread the word and get some users interested in visiting the site.