Computers and hardware

OS X not accepting your screensaver password? Try this

In the OS X Security system preferences you can set the system to require a password when the system wakes from sleep or after the screensaver has been active for a period of time. However, you may run into a few cases in which entering your account password then does not work.

One cause can be if you have recently changed the name of your user account. For authentication, OS X will use either the short or long username, along with any aliases that you have associated with your account. However, if you have changed the long username for your … Read more

How to copy a file path in OS X

Sometimes you may wish to get the full path of an item in the Finder, and while there are several ways to access file paths, not all will allow you to extract them as text to paste into documents you may be composing.

For example, if you select a file in the Finder and press Command-C to copy it, the behavior when pasting it will be different, depending on the program being used. In some cases the program will only paste the file name, but in others it may try to embed the file's contents or its icon where … Read more

Getting to know the new Firefox download manager

Mozilla just released Firefox 20 (download for Windows | Mac | Linux), which introduced a few new features, including a brand-new download manager. The new download manager works similarly to the old one, but with a couple of new twists.

The first change you'll notice is a new Download button next to the Home button. This gives you quick access to the last three downloads. The Download button will actually display the time remaining during a download, then change to an arrow when the download completes.

You can click on "Show All Downloads" or use the keyboard shortcut, Ctrl+… Read more

How you may have inadvertently participated in recent DDoS attacks

The risk that an Internet-connected computer is infected with malware will never be reducible to zero. It's just the nature of software that errors happen. Where there are software-design errors, there are people who will exploit those errors to their advantage.

The best PC users can hope for is to minimize the chances of an infection and to mitigate the damage a piece of malware can inflict -- whether it intends to steal a user's sensitive data or to commandeer the machine as part of a cyber attack on servers thousands of miles away.

Last week, Internet users … Read more

Change your Notification Center sound

When you receive a notification in Apple's Notification Center for Mountain Lion, the system will use the built-in "Basso" sound. If you do not want this sound to play whenever you receive a notification, then you have a couple of options.

The first is to disable the sound completely, which can be done on a per-application basis in the Notifications system preferences. Simply select an application and then uncheck the "Play sound when receiving notifications" option, which should silence it.

Unfortunately this is a relatively limited option and one that requires you to change it … Read more

How to manage transparencies in Preview

Transparency in images files can be quite convenient, especially if you need to place the same image over different backgrounds and want it to properly blend in. While having a white or other solid color background may help you view the image on the screen, with this setup if you embed it in a document with a different-color background then the white will stand out as an obtrusive rectangle.

To help reduce this, you can both manually remove backgrounds from images using Apple's Preview application or use a transparent canvas to compile images that already contain transparency.

To create … Read more

How to find truly free wireless access

You're in the middle of a city park. You're at a rest stop on the side of the road, seemingly in the middle of nowhere. Or maybe you're simply in your living room. You turn on your computer and have instant, secure access to the Internet without requiring any network cables or log-ins -- or even any payment to an ISP.

Yeah, right.

Ubiquitous, free, and safe Internet access is a long, long way off, and many skeptics believe such a day will never arrive. The glass-half-full among us will point out that the number of people … Read more

Home networking explained, part 5: Setting up a home router

Editors' note: This post is part of an ongoing series. For the other parts, check out the related stories section below.

It might seem like a daunting task to set up a new home router. But it doesn't have to be if you understand the most common way routers are managed: through the Web interface. The hardest part of using the Web interface is getting to it. Once you have gotten there, the rest, at least most of it, is self-explanatory.

Note: Almost all home routers on the market come with an Web interface, which is a Web page … Read more

Five things to consider before buying LED bulbs

As your incandescents burn out, it's a good time to consider switching to LED bulbs. By now, you probably know that LEDs have an impressive lifespan (20-something years!) and are very cost-effective. You probably also know that they're a pricey investment that can run five times more expensive than incandescents.

Despite the cost, now's the right time to switch to LEDs. These bulbs have made significant advances over the last few years, finally delivering the warm light incandescents have comforted us with for decades.

More than ever, there is also an overwhelming number of LED varieties, and … Read more

How to unlink a file type in OS X

For every application installed on your Mac, OS X will scan its document-handling capabilities and store them in its Launch Services database, which it then uses to pair up document types with the applications that are built to handle them. Therefore, if you install a new image-handling tool on your system, when you right-click image files or get information on them you should see this program be available in the "Open With" section as an optional handling program.

This service is convenient for ensuring that documents can be opened directly from the Finder; however, it assumes you always … Read more