LimeWire 4.0 is the last version we released for Mac Classic, see http://www.limewire.com/english/cont..._discont.shtml for why.

Unfortunately, we fixed the upgrade notification on Mac Classic for the 4.0 release, so Classic users see the notice about a newer version.

We're going to build a new version for Classic that disables this upgrade prompt.

Sorry for the trouble in the meantime.