Returned to play...

[Melwis]

Does a creature that "returns to play" in the situation where a card like Oblivion Ring gets destroyed thus returning a card (in this case a creature) have summoning sickness once again?

[cdr]

Summoning Sickness (Informal): The term "summoning sickness" is an informal term which describes a creature's inability to attack or to use activated abilities that include the tap symbol or the untap symbol when it has come under a player's control since the beginning of that player's most recent turn. See rule 212.3f. See also Haste.