Hi dbaars, this is not a problem. It is working as designed. Let me explain:
In the spotyxbmc addon (same place you configure spotify username&password), there is a selection to output the spotify-related messages to a separate file.
These messages are only output when you run xbmc with debugging activated. The debug yes/no setting can be configured eiher inside XBMC.
Settings/System/Debugging. Or by the loglevel setting in your
advancedsettings.xml file.
This file does not exist by default. It is advised to compile XBMC with --enable-debug=yes and turn off debugging in the gui (or the file) when it is not needed.
If debuggning does need to be enabled, you can select if you want the spotify messages in the xbmc.log or in a separate file. This selection is done in the spotyxbmc addon. You can also enable good looking artist fanart background from HTbackdrops in the addon.
On startup, spotyxbmc gets the information from spotify servers regarding all your starred songs, your playlists and the songs that are included in the playlists. So the messages should stop after a few minutes. The libspotify library creates a local cache on disk with much of this info to avoid asking spotify servers every time xbmc is started.
If you are using XBMC Eden, I recommend
this patch for integration with PVR:
The patch you used had support for integration with AudioEngine. Audioengine does not exist in XBMC Eden.
Update: Sorry, I read too fast. if you created a patch by using the script with branch=Eden the Audoengine stuff is not included.