Just a thought, try deleting all of the Limewire files manually (make sure you empty the trash and restart before reinstalling).

The files to delete are:

* The 'Limewire' folder in 'Applications'
* The 'Limewire' folder in your home directory --> 'Library' --> 'Preferences'
* The 'Limewire' package in your home directory --> 'Library' --> 'Receipts'

Once you have done that, open up 'Disk Utility' in your 'Utilities' folder inside 'Applications' then verify/repair disk permissions.

Once that is completed, restart the computer and then try reinstalling.

Let me know how things go,
Sphynx :-)