I have seen few cases, but some users have had problems installing ESET NOD 32 in some versions of Ubuntu 11.04 onwards.
The common mistake it gives is "Please install the following files or packages: /usr/lib/gconv/UTF-16.so"
To solve this "problem" you have to create a link from the directory "/ Usr / lib / gconv" pointing to "/Usr/lib/gconv/UTF-16.so" since in the latest version of Ubuntu does not exist. We go to the terminal and put:
$ sudo mkdir /usr/lib/gconv
$ sudo ln -s `sudo find / | grep UTF-16.so` /usr/lib/gconv/UTF-16.so
Well I hope it helps you and remember that it is better to be forewarned than later regret!
Greetings everyone, this is my first post, I hope you authorize it  hahaha.