Hey gang!
I'm having trouble with Pages on iOS 5.0.1 on both iPad 2 and iPhone 4S. Just now it happened again; I opened Pages on iPad (I usually edit with Word or Pages on Laptop) and for a brief moment showed my iCloud synced files, only to quickly have them disappear right before my eyes!
I then opened pages in my iPhone and... Yup. Same thing; The Pages Disappearing Act, co-starring iCloud.
Anyone else feel my pain?