Kaspersky labs came out with its Q3 report and not surprisingly Oracle and Adobe have some of the worst holes impacting the largest number of users. What I was surprised more about was that Apple made it to that list even though Microsoft didn't explicitly get named. The map below shows the % of users infected.
Also found it interesting that iTunes has a lot of holes. Who would have thunk it.
IT Threat Evolution: Q3 2012 - Securelist