I am having a maddening problem which I hope someone has seen.
I am working on ubuntu, remotely over putty. In the shell console, either bash or tcsh, everything is fine. Everything is also fine within vim.
However, when I run an app which has its own console interface, such as R, python, or the mysql client, I cannot type the character "n". All I get is a bell.
For example, I run mysql client, and I get the normal prompt: mysql>
I can type sql commands which don't contain "n", e.g. "show tables". But as soon as I hit an "n", it just bells. Likewise for the R console, and python.
This MAY have started when I installed R. However, I am not sure because I did not do much on this platform before installing R.