I just got back today. The parks didn't seem too crowded to me, but then I used a touring plan from the Unofficial Guide that worked brilliantly (didn't q for more than 10 minutes and often less). I also only stayed at the parks from 9-12 and then returned at 5.30 and stayed until closing.
So, if you get to the park before it opens you won't stand in line at all. My final night at the Magic Kingdom (Saturday) I saw queues for Space Mountain reach 50 minutes, although Buzz Lightyear was around 20 and I got on the Haunted Mansion in 5 minutes.
At Animal Kingdom two Tuesdays ago, Kali River Rapids got up to an hour.
Disney is always busy during the Summer, but I don't think it is crazy right now. If you go with a plan it'll be fine!