sit0 with nemo on 9.3

After an update from mainly KDE 3.4 to 3.5 I got suddenly an setup box for nemo. Never used it nor did I know it but it may be installed because I was interested to see what it would do. I let it do the default install and have now three rows of small monitors in my panel. Two for the two ethernet-cards on my computer and one with a red cross for sit0. Have googled and found out that it has something to do with tunneling and maybe with wireless which I do not have and IPv4 and IPv6. Could somebody give me a more complete insight and answer me if I can get rid of this sit0 without problems?