First of all, I think you should get this CID adware off your system I'm not sure whether Ad-Aware will remove it, you're probably best to go to a specialised help site. Here are some good ones.

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If your LW connection's ok & you can download movies without a problem, you're probably seeing fake music files. There are heaps of fakes being shared & these will sit connecting for ages & then need sources forever. There's more info & tips in the threads below.

Fake files showing up in search results
How to find music

Click on the Connections tab in LW, right click on the ultrapeers that you're connected to > remove. LW will find new ones & that can change the search results that you see.

Are you sure that Comodo's allowing LW access? Here are some config tips.
PortForward.com - Free Help Setting up Your Router or Firewall
Your Linksys probably has a firewall as well...what's the model?