hi sisko89 Are you sure you're using LW version 2.7.9? That's a mighty old version. Version 2 is what I started with ... its behaviour is not really suited to the gnutella network anymore. Some if not many gnutella client programs 'may' be banning it when it attempts to download from them.
I would recommend updating to LW 4.8.1 or LW 4.12.15. Lime Wire » Download Out-Of-Date Installers

Also, delete your LW prefs folder whilst LW is CLOSED; Deleting LW Preferences folder in OSX

I should think after that your LW will behave a lot better.