Zeus/ZBOT infection manifested through Amazon

Today while browsing Amazon I found myself confronted (both in Firefox and IE) with a dialog overlaid over the page which would not let me go anywhere else. It said:

followed by fields to enter all credit card details including signature panel code and ATM PIN. It looked genuine, except that
- I wasn't doing Online Banking. I have online banking but not with Amazon. I wasn't even aware that they did. In fact, they don't, do they?
- asking for an ATM PIN sounds a tad suspicious
- my information will be "overused"? Yeah, right.
Googling this text convinced me I had contracted a form of Zeus/ZBOT, so I came here (after having successfully cured a previous infection with another PC last year).

Here are my logs. I can't seem to find back a log of SAS or MB. Sorry about that. Perhaps they were erased by one of the later steps? IIRC SAS found nothing and MB found two infections that I then cleared.

My question is of course: Is my PC now clean?

PS: Browsing Amazon seems to work fine again.