A couple of important apps on my iPad have become greyed out during a recent update... If I click on them it just goes to 'waiting' but nothing else happens. I can't delete them to reinstall!
This response gets rolled out quite regularly but have you tried doing a reset? (Sleep button and home button pressed as the same time until the Apple logo appears) This can sort a lot of issues. Are you sure the apps still exist?
I think it's the absurdly slow internet here which kept timing it out. In the end the only thing which worked was when a new update came through from App Store automatically and then it updated!
