I have a MRTG graph of # of spam blocked in transit and it's been consistently 52-56k a day for years!! I always notice a huge decrease over the weekend and it picks up big-time during the week. From 40k on the weekend to an average peak of 54k weekdays.
I wonder if this means that the majority of zombies are actually business PCs rather than home PCs, and they get turned off over the weekend.
Loren
