This week on Lifehacker, we've got Linux distributions, backup solutions, Opera Mobiles and the piggy flu.

• Opera Mobile 10 beta is now available (tabbed browsing and speed dial)
• Make a detachable fish eye lens adapter BY YOURSELF
• Lower your piggy flu risk at airports

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• How to manage a group project in Google Wave
• Quick Steps is Office 2010's killer feature
• mmKeys.dll makes iTunes work with other keyboards

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• Download Fedora 12 right now
• Nerdcart, a mobile workstation and media center
• Build a cheap but powerful Boxee media center

• Google Tasks Client puts tasks (or any Google app) on your desktop
• Pingtest assesses the quality of your internet connection
• You're backing up data the wrong way

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• Five best online backup tools

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