After updating my iPhone 4s that worked absolutely fine, i set about my iPAD 2,
took forever for the request made icon change to down loading, then installing. Once completed i had severe connection issues, Safari not finding servers, iOS telling me my password was incorrect so real problems, i could not even populate the BBC news app it just stuck as did Ebay, Amazon, Maplin etc Apps...
Not one to panic but terrified because i'm off on holiday for a week to Spain on Saturday, i use my iPad to remote my PC and remote assistance to systems i fit, and i have several hundred pages in Notes which i use as 'sticky's'.so do i need this like a hole in the head?
tried several reboots, eventually last resort before defaulting and clearing it out, and restoring, fearing loosing those precious notes (not certain they were all backed up), I reset my network settings (which wipes all stored login details for various sites, resets WiFi details etc),
To my Massive relief it cured all the connection problems i was having, so for some reason something must have corrupted.
you need to know what details you used on each site you use.
suggest you all try it
Other suggestion is you do need a lot of spare memory space, so park large files onto PC in alternative cloud storage, then delete from your device. You can restore deleted apps afik no are charged again, so delete those your not really using making sure you keep the data safe.
hope it helps
Alan