Reply #4: There has been mixed news so far, nothing concrete

[Democat]

This thread says the ads are hurting Kerry and the Republicans are probably about to put a lot more money into the Swift Boat ads:
http://www.democraticunderground.com/discuss/duboard.php?az=show_mesg&forum=104&topic_id=2199385&mesg_id=2199385

Others have noted no major drop for Kerry in the tracking polls.

This whole Swift Boat thing is not dying, it's getting bigger and the Democrats are going to have to do something to put a stop to it, or the Republicans are going to spend millions on it and other similar smears because they will know that Democrats will let them.

Clinton has said that right wingers must be punished for these kinds of attacks. So far, they remain unpunished.