Update your Java to version 1.5 (take the JRE) If you don't already have it. If you're not connected then I don't see how it can affect your browsing.

If you are connected, then reduce your uplds to about 70-80% & your downlds to about 70-90%. Go to LW's menu Tools>Options>Uplds or Downlds to make these adjustments.
Also grab some points from here: To continue files downlding (click on link)