Wirelessly posted (Mozilla/5.0 (iPad; CPU OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3)
I backed up and installed iOS 5 on my iPhone 4 and iPad 2 this weekend. Also upgraded two notebooks to Lion and hooked all of those plus another notebook to iCloud. No troubles at all. I love the iCloud implementation. I put Keynote or PowerPoint presentations on my iCloud from one of the notebooks and viola, they are on my iPad. This is going to be great for me for moving docs and presentations around.