questions about multiple versions of Qt Creator residing on my computer

[xaegis]

Hello,
I apparently have 2 versions of Qt Creator on my computer. One is:

Qt Creator 2.6.2 
Based on Qt 5.0.1 (64 bit)
Built on Jan 30 2013 at 07:08:10

and available when I use the Unity Hud.

When i use the command line I get a different version of Qt Creator.

Qt Creator 2.6.84 
Based on Qt 5.0.1 (64 bit)
Built on Mar 14 2013 at 07:35:51

This(2.6.84) is the version I would like to keep. It is installed fromt he PPA but does not install a useable version of Qt 5.0.1 so I had to install the first one (2.6.2). How can I sort this problem out and have only one version of QtCreator installed?

Thanks in advance