As I said in my post earlier I have upgraded to Kubuntu 10.10 from 9.10. I use Openoffice quite a lot to write documents and so, and as I’m quite often sharing documents with windows users, I do use Arial as a standard font. Somewhere during my transition, it went away.
I am pretty sure I did have it when first installing 10.10, but after some time it did go away. And what was happening is that the new Ubuntu fonts, kind of replaced them and to get them back you need to accept the copyright/restriction or something.
So what you need to do is to run (from the command line)
sudo apt-get install --reinstall msttcorefonts
This will popup and acept page that you can say yes to so it will get installed. If you don’t have that installed you might need to run
sudo apt-get install ttf-mscorefonts-installer
to get it installed.