Had an interesting occurence, threw together a quick module in around 30mins, and in doing so I accidently input my field type with a capital, like so:
'type' => 'Text'
What was funny was that 3 people all tested it on local environments and it worked perfectly, however when it came to a live site, the form would freeze and the text fields were blank.
Once I changed it to
'type' => 'text'
Everything worked perfectly…now I know it isnt a bug, it is my coding that caused the error, but what did surprise me was that in Desktop Server and WAMP it functioned perfectly fine.