Maybe since you moved to broadband, you've started using a modem/router with an internal firewall??

If you see the firewall icon (brick wall in front of the blue globe) then chances are that people can't download from you. Or, if you have a really early version of LW that doesn't show the firewall indicator...like Dano said tools > options > bug reports > view example. Scroll down to 'recieved incoming this session'. If it's false then you can't recieve incoming connections from other computers (usually a firewall issue).

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