Restarting LimeWire helps a little. Most of the downloads will still not finish. The whole problem is that LimeWire considers all hosts that don't respond properly as bad and won't retry it, so - in case the host is really not active anymore - LimeWire won't keep on retrying it. Otherwise LimeWire would make it easy for a malicious attacker to use gnutella for a DDoS attack.

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Morgens ess ich Cornflakes und abends ess ich Brot
Und wenn ich lang genug gelebt hab, dann sterb ich und bin tot

--Fischmob