Where are settings specified in preferences stored

[dualfaces]

Hello,

I tested the following witht Qt Creator 2.8.1 and the new Beta Version:
I manipulated some kits, added a user defined one. Then, using the maintenance tool i uninstalled Qt Creator (and Qt). After reinstalling the edits i did to the kits are still there (and a kit that was deleted before uninstalling is not added)
Where are these settings stored and how can i come to a clean installation?

Thank you.

Regards!

[sierdzio]

On Linux, preferences are stored in $HOME/.config/QtProject/qtcreator

[mcosta]

In Windows, you found settings in %APPDATA%/QtProject/qtcreator