See my post just above, I had the same problem, this seems to be a problem with the new version of Limewire - use the link helpfully provided by someone earlier in this thread to download the slightly older 4.14 version of Limewire and this has solved the problem for me.

Does anyone else get the problem though that if you pause a download, the whole of Limewire will freeze up and can only be closed via Task-manager? If I find a rare file I want to download now when all my download slots are already full I now find it's simpler to delete the download I want to pause from the list and then find it in my list of incomplete files and resume it - works the same but is rather "round the houses". Obviously another bug in the system that needs ironing out!

Bryony