If a host attempts within a certain time period to download too many files from a host sharing files then the download host is temporarily blocked for about an hour.

Note: If you are using LPE (LimeWire 5.6.2) then it possesses several upload bugs. I fixed a few of those bugs for WireShare which is the updated continuation of LPE. The 'Greedy Servant' settings are far too low for LPE. The LPE internal upload settings are ugly.

Personally I've had hosts attempt to download several thousand files almost simultaneously (as fast as they could select & download and as fast as the messages are relayed and processed.) That kind of downloading is a little crazy and unwise to download from a single host who more than likely does not have too many upload slots set. LPE has a defensive system not only for uploads but also for poorly designed apps that don't behave properly (eg: a buggy release version.) This defensive system blocks hosts that send too many messages. A prospective downloader might browse the host first. This browse is added to a tally along with any subsequent download requests. If the tally reaches a certain number within a certain time period then it is considered not normal behaviour for the network.

I hope that makes some kind of sense.