Hi,
Please take a look at the following screenshots, especially around the SEARCH box on the top left corner.
Screenshot 1: from http://www.datatables.net/manual/styling/bootstrap-simple.html
http://i.imgur.com/PestD8b.jpg
("Search" label appears on top of the search box, and slightly to the left)
Screenshot 2: from https://datatables.net/examples/styling/bootstrap.html
http://i.imgur.com/bK5EKUz.jpg
(Looks OK)
Screenshot 3: from my own project:
http://i.imgur.com/jpVV9l2.jpg
(Position looks OK, but it seems that a padding is missing)
Tested with opera/firefox/chrome on windows, and firefox on osx; same results.
Happened on dataTables 1.10.1, 1.10.2, and the newly released 1.10.3.
Rather baffling because as far as i can see, the markup and the included css was identical.
Thanks.