I have XP, and after purchasing the Pro version I thought my "disconnected/no files available" error would disappear - sadly no. Read through several forum posts and this is how mine was sorted: firstly removed firewall - still didn't work, so reinstated it; then deleted .limewire folder, didn't work; unchecked the "automatic logon" in the options tab and HEY PRESTO! I'm back online and ready to rock! Thanks to this forum I have solved my problem!