Do you have first hand experience with 4.2 Beta yourself?
Been using it for about a week....seems to be pretty solid...folders are GREAT, I now have 1 page of apps....multitasking is iffy....developers still need to work on supporting it. And a few apps break as a result of using 4.2 right now. Zinio for instance won't display anything. CBS locks at the splash screen. Air Video plays sound but no picture. Air Sharing goes to the lock screen but won't bring up the keyboard...so until thats resolved it is permanently locked. And, while it does have printing in the OS it doesn't see my network printer (other printing apps on the iPad see it just fine).....so while it still has some issues it is actually really nice. The ability to transition from one app to another is very useful and works cleanly. I haven't really noticed any major life altering changes tho.
Edit: Air Sharing works fine if you uninstall it then reinstall it and don't use the password lock.
I have also use the 4.2 , for me the first beta give me lot of bug , so i downgrade … i run yet in 4.2 beta 2 and work fine for me , the only bug i have found yet is no access in the sound ( like email, notification ) i see it but when i try to enter it froze my iPad (3G) other than this all work fine
folder is perfect especially because we can put 20 app’s by each witch nice
and like you now i have only one page in my iPad
PS: i am not develloper and i don’t enter any code or registration just use the magic trick : UPDATE