Mona Charen over on NRO thinks so: "It was only a matter of time before Bill Clinton did or said something to undermine and/or sabotage his wife's campaign due to his own overpowering narcissicism. Today he told an audience that he opposed the war in Iraq from the beginning thus undermining his wife's position, namely that she was for it but lost confidence when Bush supposedly screwed up the conduct of the war."
Plus there's evidence that he wasn't against it from the beginning--he supported giving Bush war authority back in 2003.
But don't forget--we're talking Democratic primary voters here. They may not care.
Awhile back, Jim Geraghty of NRO said something that just may turn out to be wise and prescient: "Declaring that Hillary Clinton has done nothing wrong is as instinctive as breathing to many Democrats now. Nominating Obama or Edwards over Hillary now would invalidate all of those defenses over the years. It would mean her critics had a point all these years, and they cannot concede that core belief they've held close to their hearts for a decade and a half. Democrats aren't just supportive of Hillary Clinton's rise to the presidency: they're emotionally and intellectually invested in it."
It will be very interesting to find out if that's true.