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: 
There is [DoxBox](https://github.com/t-d-k/doxbox): 

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> Open-Source disk encryption for Windows
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> * Easy to use, with a 'wizard' for creating new 'DoxBoxes'.
> * Full transparent encryption, DoxBoxes appear as removable disks in Windows Explorer.
> * Explorer mode lets you access DoxBoxes when you don't have admin permissions.
> * Compatible with Linux encryption, Cryptoloop "losetup", dm-crypt, and LUKS. Linux shell scripts support deniable encryption on Linux.
> * Supports smartcards and security tokens.
> * Encrypted DoxBoxes can be a file, a partition, or a whole disk.
> * Opens legacy volumes created with FreeOTFE
> * Runs on Windows Vista onwards (see note below for 64 bit versions).
> * Supports numerous hash (including SHA-512, RIPEMD-320, Tiger) and encryption algorithms (Including AES, Twofish, and Serpent) in several modes (CBC, LRW, and XTS), giving more options than any other disk encryption software.
> * Optional 'key files' let you use a thumb-drive as a key.
> * Portable mode doesn't need to be installed and leaves little trace on 3rd party PCs (administrator rights needed).
> * Deniable encryption protects you from 'rubber hose cryptography'.
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After open-source computer program FreeOTFE for on-the-fly disk encryption (OTFE) got discontinued, the DoxBox fork sprung up. 

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This means that you can encrypt a partition using LUKS ([How to encrypt external devices?](https://askubuntu.com/questions/500981/how-to-encrypt-external-devices)), and then access it from a Windows machine using DoxBox.
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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