Here is a bit of my review experience times:

Back in October last year the review process in Games/Puzzle took about 7 days. In november, the photography section took about 4 days. Then around december something happened and all my reviews have taken about 6-8 days, with a few exceptions here and there of about 10 days (This includes games, photography and productivity).

Then coinciding with the iPhone 3.0 release reviews started taking much longer. In June, Lifecards (photography) was floating in review-space for about 17 days, so even though it was submitted about 8 days before 3.0 was released, it didn't surface until more than a week after. Voice alarm (productivity) took about 12 days. Last round of Lifecards and Lifestrips took about 10 days (to get rejected) but only 5 days to get accepted after the rejection.

The two apps were initially rejected because they could have confused the user at one point where an internet connection was required. They didn't crash or anything, they just didn't announce that network access was needed. I am glad Apple is pointing it out, but I can understand why a lot of developers would be annoyed by it.

I submitted Lifecards and Lifestrips Monday this week and they both appeared on the app store yesterday evening: i.e. approximately 5 days.

So the last two times I have submitted something in the photography category, it has taken 5 days for it to go through, which I think is pretty good.

If you have an urgent bug 5 days is almost bearable, but it still resulted in a few emails and ugly reviews.

Voice alarm was been submitted also on Monday, but so far nothing -- 6 days and counting.

In academia, I have waited up-to 12 months for reviews of papers. But then again, they were not really urgent.