I'm not an Apple apologist (fanboy) by any means, but sometimes people place anger in the wrong places.
While there is no doubt in my mind that there are people experiencing serious issues with Logic that they had not before, they also need to realize that version seven was a major (VERY MAJOR) upgrade to a platform that had since been created on the other side of the planet. While it really is an annoyance to have a $300 upgrade that isn't feasibly usable, the vast majority of people have no problems with Logic.
Realize that, again, the vast majority of people on this board are people having issues. Being musicians, we're a vocal minority. That said, the number of people on here complaining is very small compared to the number of people actually running Logic 7.
Issues are a pain, but they will be addressed. Waves plugins gave me serious issues until I got an update directly from my Waves rep.
Since verifying that each plugin I run is fully Logic 7 AU compliant, I have had no issues whatsoever.