iVars being incorrectly flagged as not released in dealloc.

Just upgraded to XCode 4.4 and I believe this behavior started with the upgrade, but I'm experiencing  some false positives: The following ivars are flagged as not released in dealloc, obviously incorrectly. I have several examples of this.

@synthesize loginButton = _loginButton;
@synthesize rememberUserIDSwitch = _rememberUserIDSwitch;
@synthesize forgotUserIDButton = _forgotUserIDButton;
@synthesize forgotPasswordButton = _forgotPasswordButton;

- (void) dealloc
{
    [_loginButton release], _loginButton = nil;
    [_rememberUserIDSwitch release], _rememberUserIDSwitch = nil;
    [_forgotUserIDButton release], _forgotUserIDButton = nil;
    [_forgotPasswordButton release], _forgotPasswordButton = nil;
    [_wireframe release], _wireframe = nil;
    [_userID release], _userID = nil;
    [_password release], _password = nil;
    [_dnString release], _dnString = nil;
    [_answer1 release], _answer1 = nil;
    [_answer2 release], _answer2 = nil;
    [_labels release], _labels = nil;


    [super dealloc];
}