I hope THIS (click on link) does not apply to you. Do you use USB connection? If you have a choice use the ethernet connection. It's much more reliable than usb. Go here & scroll down to 3.4 USB-based modems/routers

Do you use the Resume button on all your downlds to continue them after opening LW? Doing so will put great stress on LW & have side-FX of upsetting LW's connection quality & use up much of your comp's resources as well. And it can also drain your main connection.