No files showing up in your library is probably due to the hashing - LimeWire now creates a (nearly) unique identifier for each file. This has several benefits (and more coming) but it takes a while to hash each file - the files do not show up in your library until they are hashed. Wait (the hashing only needs to be done once per file).

There's a small chance that the lack of search results is related to the hashing - but it shouldn't be.

What do you see on your 'Connections' Tab? (You may have to enable the tab through 'View|Connections').

Mark