Anyone else having this problem??

[dannyboy29]

Recently I have had some problems downloading mp3 files. I am running Limewire Pro through Windows XP. The problem is that as soon as I click on downloading certain mp3 files they immediately pop up as "Busy Host" or "Need More Sources". The strange thing is that the ones that pop up as "need more sources" will start downloading only if I click on the "find sources" button. The ones that pop up as "Busy Host" just stay that way. I have to mention that I mostly download from users that allow others to view their shared files. Could I just be blocked by certain users because I am only sharing 100 files or is it something more?
Thank You in advance