I have always waited a few weeks to a month on updates. IOS 5 for some reason looks like a disaster right now. So the question is, who else is holding off for now?
That's because you are only reading the horror stories as those who upgraded without a hitch are busy testing out the new features! I'd hold off until later tonight or early tomorrow. The only "disaster" right now is that the servers are slow and that's causing some iOS devices to fail when the update tries to verify with Apple's iTunes servers. Wait until users stop slamming the servers and everything will go as planned.
PS: Make sure your back up is actually recent. Go to iTunes>Preferences>Devices to see if it really backed-up the files. Some aren't backing up the files fully and it's causing them to lose precious files/videos/photos.
I'm holding off as well. Figure I'll let the Apple servers cool down a bit, plus, my big rig is XP and I've read that 10.5 requires Win7. Have that OS on my rather inadequate netbook, but that process is probably best left for the weekend.
Like others, I'll first make a backup before doing any update. And have an adult beverage handy!
I installed 10.5 on my XP machine today.
I'm hoping to hear more feedback from iPad 1 folks also. I know that multitouch gestures and itunes lyrics are gone and I don't have any other iOS5 capable devices so I'd like to hear more about the cool stuff that I'd be able to use before I take the plunge.
I'm waiting to hear more about how other iPad 1 users find it before I upgrade. I learned my lesson with Lion :s