I have been using the new Avast 5.0 on my PCs. I just installed WHS and want to purchase the Avast WHS edition, but on-line it appears that the version is 4. Is this the latest edition? Does it provide the same antivirus support as Avast 5.0? Is there a newer (v5) version with the version 5 look and feel coming soon? Thanks for your help.