I'm overall frustrated with the newest version's performance and am wondering if there's anyway to go back to using the old Limewire.

--If We're Stuck with this One, a Question:

What do I do about files which say they're 100% downloaded in the search window but don't appear in the library, only in the incomplete folder (gahd, if I could only use iTunes support)?

The new version (3.6.10) has a fix for the stuck downloads, and if the iTunes support doesn't work, post the details.
Alternative Free versions are available here
http://www.mager.org/LimeWire/LimeWire.html
http://www3.limewire.com/download/
http://www9.limewire.com:82/download/

Happy Easter

I'm sorry, I'm really inept at computers - which things do I download from the long lists in the parent directory?

Woooooh Eastah!

Happyapril crazymay

Pick the folder you want, and choose the installer for OSX. for example
http://www3.limewire.com/download/

click on, say, the folder called "3.6.8/"
open that and click on "LimeWireOSX.dmg"

(Really though, trying to install an older version can be a pain)