Yes isp's can & some do filter or block specific p2p sharing programs or they can target a particular user or apply it universally. They use special programs to help them detect these types of programs & users.

There is a chance your sister didn't get LW from the official LW site which is why pro support doesn't recognise your email address. Either that or your 6 mth support has finished.

I'm a little confused here. You're refering to your speeds in kbps. Whereas LW shows speeds in KB/s. So you're using dial up connection right?

After connecting with LW your connections on your connection window should be stable.

Did you configure your firewall so it allows LW full access (advisable not to have 2 active firewalls b/c they can interfere with each other); remember XP has its own firewall. I'd recommend disabling it: go to the control panel, double click on Windoze Firewall, check the disable box. And then just keeping your Norton Firewall active & properly configured: *Configuring Norton Internet Security

Which isp are you using?

After starting LW, let it settle for 10-20 mins before using. If you're using dial up, then "don't" use the Resume/Find Sources on all your incomplete files or else this probably will affect LW's connection quality. Only apply it to one or 2 at a time. With a decent break in time between the next one or 2.

See the following link & follow all the off-shoot links to find hints & extra skills to help: To continue files downlding (click on link)