Question: I have a relatively old pc (5 years old) running on vista. 
I got fed-up with vista and I am not quite convinced with windows 8. I seriously considering to switch to Ubuntu. Being quite new to the Linux/Ubuntu world I am not sure which is the best release for me. Shall I go to the latest release (the 13.10)? or shall I go for the latest LTS (the 12.04) release or something in between?
Is it painful later on to upgrade your Ubuntu system?
Please let me know your recommendations.

From System Requirements there should be no problem. My pc seems to have the suggested requirements for all the latest releases.

Thanks for your help.

Answer: 
You can also use

```
sudo apt-get purge gimpshop

```

which will remove package with its config files. Sometimes you want to get rid of everything that the package brought and AFAIK this is your case.

In the next versions of Ubuntu, when btrfs filesystem will be default, apt-get is integrated with snapshots of btrfs so you can get exactly to the state before the package was installed.
I was simply being stupid and not trying the obvious. Of course gimpshop somehow showed nowhere as installed (especially not in aptitude, searching in "Installed packets" for "gimp"), making it no easier.

Yet the obvious thing that I did not try, was

```
sudo apt-get remove gimpshop

```

It did work. I installed GIMP 2.8 from the Software Center afterwards and it launched normal. Why it didn't before, I don't know.

So for future reference: ALWAYS try to apt-get remove the package you installed, no matter which way and how ominous the content seems at first. Topic closed.