Dial up has a speed of around 5 to 7 KB/s not 25. Sounds like you have a lower end broadband connection like me. lol
1. Go to Tools>Options>Speed & click the option for Disable Ultrapeer Capabilities & press the Apply button.
2. Go to Tools>Options>Uploads>Basic & reduce the Upload bandwidth down to below 70%. If this doesn't do the trick then reduce it further. Press the Apply button everytime you make a change.
3. Don't use the Resume button on too many files (if any) or else it will slow down LW & maybe your computer. It may also affect LW's connection quality.
4. After you open LW, let it settle for 15 to 25 mins or so before doing anything with it.