It seems as if Defendants can easily stall this thing out until Election Day. If he wins the presidency, it's hard for the Plaintiff to prove that Obama was born outside the US and thus not a natural born citizen. He would have to get a birth record from Kenya (if were in fact born there) and there's no way that Kenyan officials can be compelled to comply with a subpoena from a US court. Ditto for Indonesia regarding an Indonesian passport he is purported to have obtained at age 21.
If he loses the presidential race, Berg can either drop the suit entirely or possibly seek to amend the suit in an attempt to remove Obama from the Senate - if he can somehow document that Obama was not a US citizen at all at the time of his election in 2004.