First, What is your OS and Computer info.
For XP;
Start > Run > type"MSCONFIG"
select startup tab and uncheck limewire.
restart.
Otherwise
Try uninstalling it. restart then install.

Tip:
If you expect an answer, tell the whole story, not just what you think is revelant.
What is your operating system ?
Decribe your computer. Brand, Speed, How much RAM ?
Need more info and history about your computer and the problem.