Ubuntu 10.04 and 11.10 reached their end-of-life last May 09 2013, what happens if I'm going to build android from source with these platforms? Does it affect the build process?
In the Initializing Build Environment site, building on Ubuntu 12.04 is currently only experimentally supported and is not guaranteed to work other than master.
You can easily use Ubuntu 12.04 for all variants of Android. The only thing you need is to download the latest versions of the required version. Personally, I use Ubuntu 12.04 for developing Android 2.3.4. You can look into this thread for more information.