I have an iPad and I was playing a game and then hit the lock button now I try to unlock it and when I try to slide it open to unlock it the screen dose not react to my touch??????
I faced the same problem today and I've tried all the possible options.
I restarted iPad2 few times and it didn't work.
So I restored factory settings, but still it didn't work.
I tried restart few more times but in vain.
I have iPad2 Wifi+3G 64GB ATNT version and I bought it on Mar23.
thanks, i was in a panic because my 4 year old locked his while i was at work. thried your method and it worked like a charm. had to hold it down for about a minute.