May be I forgot to tell you something important, I downloaded the last version of LW because I received an email from : sm-music@m125.xoopa.net ... they send spam mails advising to update softwares like google earth, itunes, etc... among which LW, and instead of downloading from LW official website I did from theirs (I know it is a big mistake) may be or maybe not the reason why I cannot connect now ?
if not, your last email says to move gnutella.net from LW preferences but as I cannot open LW, I cannot find the preferences, so ?