As usual, with every new OS released, lots of people have lots of issues.
The silent majority however has no issues.
10.7.2 has had lots of development time, and presumably it will fix a lot. OTOH, it is THE iCloud release, and as usual, many users will have lots of issues.
I have used Lion as my primary OS ever since the GM, and have never looked back at Snow Leopard. It all works great for me. Must admit, that i did not upgrade but wiped the HD, installed the GM (you know, the "ESD"-way) and did a restore of all my data.
I love Lion.
Can't wait for 10.7.2, iOS 5 and iCloud.
Just a note to Tim Cook:
No pressure, mate. Just the whole world looking at you as you replace the best sole presenter in the world.
But, you'll do fine. We have confidence in you!