I've only been having this problem for the past few days, but since it hasn't resolved itself I thought I'd post here to see if it's been reported.
Basically, my review counter seems to be out of whack. For example, I refer to the image below:
As you can see, it's showing nine items in the queue. However, when I go in to review the items, I see a tally of zero next to all the review queues. In some cases there are some items to review, but these do not add to the total shown in the counter (but this I understand as the queue may just be getting cleared).
However, I know there is an issue here because as I type this, the review counter is still showing 9 but upon going to review the items they all have a tally of zero (and I've tested this fact in multiple browsers on multiple Macs).
So, has this been reported? Is it only affecting Ask Different, or is it across the Stack Exchange network?