Question: I have AAO110 (512ram, atom 270N)
What is best version of Ubuntu, if i need just web? UNR 10.04 was almost fine, but i wonder if there are better options now.

browser, blue-tooth, WiFi, long battery, no extra elements on screen (e.g. not like in Unity) while browser opened

Answer: 
Use [VeraCrypt](https://www.veracrypt.fr/en/Home.html) it's been the default replacement to TrueCrypt.

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> VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux. Brought to you by IDRIX (<https://www.idrix.fr>) and based on TrueCrypt 7.1a.
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The problem with free solutions is that apart from a few, most of them are usually not well maintained or well supported. You have to wait for compatibility updates and bugs resolutions. It is also better to go for container encryption than drive or disk encryption, specially for external drives, as they are more flexible and easier to manage. If you are willing to spend a little, I can suggest **BestCrypt** containers. They are supported on Windows, Linux, Mac and even Android with a number of algorithms. Instead of encrypting your USB, you can create a container the size of your USB, external hard drives etc. and access them on each platform.