Thanks for asking, I am interested as well in reading the response to your questions.
Paolo Andy wrote:
Just wanted to know if anyone has used LucidWorks Solr.- How do you compare it to the standard Apache Solr? - the non-blocking IO of LucidWorks Solr -- is that for networking IO or disk IO? what are its effects? - LucidWorks website also talked about "significantly improved faceting performance" -- what improvements are they? How much improvements? Would you recommend using it? Thanks.