I don't know if this is the right thread to ask but maybe some QSpot expert from the thread could help me?

I have all three available (QSpot, MeeSpot, official Spotify) Spotify clients installed on my N9. They all used to work but lately I have started to encounter bad problems. When I try to start any of the Spotify clients none of them work.

MeeSpot and QSpot start but close immediately after I can see the start screen (with playlists etc.). QSpot does not close but it hangs for forever to "Loading playlists" screen.

I should probably uninstall and reinstall the players (or actually just QSpot would be enough) but how can I be sure that they uninstall completely and do not leave some crap behind which might cause problems also in the future? Should I manually remove some folders or do I even need to do some purging from command line?