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We've already had some time with the new Xbox Live Dashboard update, and now the new firmware, which will bring Facebook, Twitter, and Last.fm to the console, is available for download today.

In addition to these services, Microsoft will be rolling out Zune Video, which promises instant-on 1080p video streaming as well as 5.1 surround sound.

We should note that Twitter, Last.fm, and Facebook will require an Xbox Live Gold membership ($50/year) and both Twitter and Facebook services require all users to be at least 18 years of age.

If you aren't a member of Xbox Live Gold, a free preview weekend will begin November 20, at 12 p.m. ET and run until November 23, at 12 p.m. ET.

For a sneak peek at these new Xbox 360 features, check out our video playlist above or click over to the slideshow.

Twitter, Facebook, Last.fm hit Xbox 360 November 17--photos

(Credit: CNET)

Last month we blogged about a bug marring Flash playback on the latest 27-inch Apple iMacs. Users on several Web sites, including the Apple Discussion Threads, noticed a problem with the Flash player that caused choppy audio and video playback, but it appears that the newest Mac OS X v10.6.2 update fixes the issue that was apparently caused by a conflict with the Airport driver.

According to Apple, the update "addresses video playback and performance issues for iMac (21.5-inch, late 2009) and iMac (27-inch, late 2009) computers that may occur in some situations while AirPort is turned on." Since our own 27-inch iMac also experienced slow Flash streaming and intermittent sound hiccups with the AirPort turned on, we downloaded the 10.6.2 update and left it to sleep overnight.

Prior to the update, the Flash Player consumed 114.4 percent of system resources, but 24 hours after the update we're happy to report 26.8 percent usage in the activity monitor and smooth performance across all popular streaming video Web sites like YouTube, Hulu, etc.

Much thanks to the Apple Forums and Apple itself for quickly addressing the needs of its community. If you haven't updated yet, simply choose Software Update from the Apple menu to install OS X v10.6.2.

Tom and Rafe discuss the apps they put on first thing when they get a new computer.

Listen now: Download today's podcast

Good news, PC gamers: today's the day to score some solid deals on three popular titles, all of them available via download for (near) instant delivery. Here's the rundown:

• Direct2Drive has Ghostbusters: The Video Game for $9.95. It lacks the multiplayer modes of its console counterparts, but the single-player stuff is a blast. It's a must-have for any fans of the franchise.
• Today only, EA is offering The Sims 3 for $29.95--a savings of $20 off the list price. If you don't mind taking a drive or waiting on delivery, Best Buy has it for $19.99--with an exclusive game guide.
• This weekend only, Steam is offering Call of Duty 4: Modern Warfare - Game of the Year Edition for $23.99. It's one of the top-rated first-person shooters of all time, and it normally sells for $40.

Every three months we corral Seth Rosenblatt to forage through the latest downloadable software and come up with a list of the worst. Why? Because Seth loves a challenge. And you people love "Top Worst" lists. It's all about the schadenfreude, isn't it?

Anyway, this Top 5 still has a lame prize, so get to watching, and then return here and post your guess in the comments. We'll draw one winner from the first 10 people to get the answer right.

Lately, I've been hearing a lot of fanfare about an application called DoubleTwist that is at its core a free music jukebox that offers content syncing to a variety of portable devices, including the BlackBerry, the PSP, and the iPod, as well as pretty much anything that can mount in Universal Mass Storage mode. One of the main draws of the program is that it can take your iTunes library and sync it to a variety of non-iPod players, an important feature for anyone who has ditched the ubiquitous device in favor of a music phone or other MP3 player. And soon, the Windows version of the jukebox will offer built-in support for Amazon MP3 store purchases as well (note: the Mac version already supports Amazon MP3 purchases), a move in line with the company's goal to offer consumers choice when it comes to digital music management.

The DoubleTwist video view.

Certainly, DoubleTwist is a useful solution for a lot of people, especially since it incorporates automatic video transcoding for a lot of the supported devices, which is the feature that drew me to the software. However, the program is not without its pitfalls, and some of them are sure to cause no small amount of frustration. For example, the video transcoding--done during the syncing process--takes forever. Conversion speed was roughly two times normal speed, so a 90-minute movie took 50 minutes or so to encode and transfer. Still, considering DoubleTwist offers this feature for free and integrates it so simply, I'm willing to forgive the sluggishness.

Much more annoying is how slow the video library loads in thumbnail mode, and while it is loading, you can't actually browse the selections. ... Read more

Here's a little Friday fun for all you game fans: From now until Oct. 25, the insanely popular puzzle game World of Goo is on sale--and you get to name the price.

It normally sells for $20, but in honor of its first birthday, developer 2D Boy decided to run a little experiment. (Check out the results on the company's blog. Very interesting stuff.)

Basically, when you click the Get It button, you're whisked to a PayPal page where you specify your "donation" amount. (No PayPal account? Click the "continue" link on the left side to use a credit card.)

So, what'll it be? A penny? A five-spot? A sawbuck? If you're honestly not sure what the game is worth, download the demo before you pick a number. World of Goo is available for Windows, Mac, and even Linux systems.

I'll admit I wasn't familiar with the game when I heard about this promotion, but it's without a doubt one of the cutest, weirdest, and most inventive puzzles I've ever played. You don't have to take my word: GameSpot awarded it a 9.0, as did several thousand readers.

I'm not going to reveal what I paid for it, as I don't want to influence anyone one way or the other. But I did pay for it--and definitely more than a penny.

How about you? Are you going to get your Goo on? If so, what's a fair price? (And how much did you actually pay?) Let's hear from you in the comments.

A one-year IOBit Security 360 Pro license normally costs $29.95, but right now it's free.

(Credit: IOBit)

Nothing thrills me like getting something for nothing. Yesterday, for example, I redeemed the last of my birthday coupons, wolfing down a free scoop of Cold Stone ice cream (Fudge Brownie Batter with brownies mixed in--yum).

Today I've rounded up three software freebies that have a combined value of $1,089. Seriously! Take a look:

• IOBit Security 360 Pro Normally $29.95 for a one-year license, this security app is free until Nov. 11. It promises "advanced malware and spyware removal," along with protection from all manner of threats: trojans, keyloggers, worms, etc. I haven't found any reviews to speak of, but the always-free, non-Pro version earned four stars from CNET users. So it must be halfway decent.
• WinX DVD Author Remember WinX DVD Ripper Platinum from last month? (Since expired, sorry.) The same developer, Digiarty Software, is now offering its DVD-authoring tool, normally $29.95, for free until Oct. 31. Use it to turn AVI, MPEG, FLV, and other kinds of video files into menu-enhanced DVDs. I haven't tried it myself, but DVD Ripper Platinum was a little gem.
• Windows Server 2008 R2 Standard This might be the weirdest and most surprising giveaway ever. Microsoft's DreamSpark program is offering this new Windows Server release to eligible high school and college students. Why? To learn IT skills, I reckon. Obviously not everyone needs or wants this OS, which is worth $1,029, but I had to mention it. Anyone who does want it will need a Windows Live ID, a valid student e-mail address, and a way to burn the downloaded ISO file to a CD or DVD.

ZoneAlarm Pro protects not only your PC, but also your identity.

(Credit: Check Point Software)

Keeping your PC secure requires diligence, common sense, and, perhaps most importantly, software. It's not enough to install antivirus and antispyware utilities; you also need a rock-solid firewall to keep hackers at bay.

Today only (in honor of my birthday, I'm guessing), Check Point Software is offering ZoneAlarm Pro Firewall 2010 absolutely free. That's a $39.95 value, my friends.

(Actually, what you're getting is a free one-year license. If you want to keep using ZoneAlarm after that, you'll have to pony up 40 bucks. On the other hand, this is the second year running for this promotion, so you might be able to score it free again next year.)

ZoneAlarm is widely regarded as one of the best firewall utilities on the planet. Look no further than the rare five-star rating at CNET's Download.com.

In addition to blocking unauthorized access to your PC, ZoneAlarm analyzes browser downloads to prevent malware infections, monitors your credit report on a daily basis, and steers you clear of phishing sites.

The software is compatible with Windows 2000 and later, including Windows 7.

Speaking of which, if you're relying solely on the firewall that's built-in to Windows--well, my guess is you're fine. That's what I do, and at the risk of jinxing it, I've never had a problem. But there's also a firewall built into my router, so I feel doubly protected.

In fact, I'll be honest. I don't run security software at all. I rely on the tools built into Windows and Gmail's outstanding spam-virus-malware filtering. I also use that aforementioned common-sense thing.

That said, my security "solution" isn't for everyone. If you want help keeping your PC (and identity) safe and sound, grab this valuable freebie. The offer expires at the end of the day.

Update: Be sure to use THIS LINK to download the software! It should take you to a page that looks like this. You should not need credit-card information or the like to take advantage of this offer. I've downloaded, installed, and activated the software and was never once asked for a credit card.