Firstly, if you are on a home PC get a firewall. This is very important. Without it your computer will be flooded with cra*p. If you are using a college or University link, then it could be that the sys admin is blocking Limewire.
Second, get Easy Cleaner from
http://personal.inet.fi/business/ton...e.htm#download
and run the registry cleaner and unnessecary files options.
Third get some anti spyware, like Ad-aware from
http://www.download.com/Ad-Aware-SE-...j=dl&tag=top5.
Try all this stuff, then, using the Add/Remove programme options, remove limewire, run the reg cleanre again. Then re-install. You will have to configure the firewall, but most will ask if you wish to give limewire access, just say yes.
If this doesn't work, over to someone else.........................