There has been a request to split a string into two by adding context to them: https://core.trac.wordpress.org/ticket/22724. The string is “Random,” and is used in both galleries and the links widget. The same string was also used for both in 3.4. I am inclined to leave it as is for 3.5 and deal with it in 3.6. Does this affect you? Please comment to the ticket.