why is the percentage of successful deliveries greater than the intended recipients in civi mailing report?
@Kboy - that sounds like it could be a bug; General receipe for this sort of scenario is to update to latest 4.6.x - if this then still persists let us know and file a bug report on JIRA. 4.6.x latest is where you want to be for many other reasons since 4.6.10 - so time well spent. Please keep us posted!