autoreleased with no pool in place - just leaking

-(IBAction)measureAngle:(id)sender {
    test = test+1;        // updates test
                          // we check for remainder of test odd or even, this alternates between
                          // the moving angle reading and the static angle reading
    j = j + 0.5;          // update by 0.5, as it takes 2 button clicks to call display label
                          // this is used as the amount to divide by for the average

    [self displayLabel];
}

-(void) displayLabel {

    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    buttonImage1 = [UIImage imageNamed:@"aoe_btn_start_off.png"];
    buttonImage2 = [UIImage imageNamed:@"aoe_btn_stop_off.png"];

    [self.view addSubview:startButton];

    self.motionManager = [[[CMMotionManager alloc] init] autorelease];
    NSOperationQueue *queue = [[[NSOperationQueue alloc] init] autorelease];

    if ((test%2) == 1) {    // triggered when it is equal to 0
                        // so after the first call ( 1 + (-1)) = 0
                        // then

        [startButton setImage:buttonImage2 forState:UIControlStateNormal];

        motionManager.accelerometerUpdateInterval = 1.0/10.0;
        [motionManager startAccelerometerUpdatesToQueue:queue withHandler:
         ^(CMAccelerometerData *accelerometerData, NSError *error){

             if (error) {
                 [motionManager stopAccelerometerUpdates];
                 labelText = [NSString stringWithFormat:
                              @"Accelerometer encountered error: %@", error];
             }

             else {


                 labelText = [NSString stringWithFormat:
                              @"%.0f",
                              fabs((accelerometerData.acceleration.y)*90)];
                 result = fabs((accelerometerData.acceleration.y)*90);
             }


             [accelerometerLabel performSelectorOnMainThread:@selector(setText:)
                                                  withObject:labelText
                                               waitUntilDone:YES];

         }];
        [pool drain];

    }
    else {
        accelerometerLabel.text = @"This device has no accelerometer.";
    }
    if ( test > 20) {
        [self resetMethod];
    }

    if ((test%2) == 0){
        [startButton setImage:buttonImage1 forState:UIControlStateNormal];

        accelerometerLabel.text = [NSString  stringWithFormat:@"%.f", result];

        switch (test)
        {
            case 2:
               angle1.text = [NSString  stringWithFormat:@"%.0f", result];
                a1 = result;
                break;
            case 4:
                angle2.text = [NSString  stringWithFormat:@"%.0f", result];
                a2 = result;
                break;
            case 6:
                angle3.text = [NSString  stringWithFormat:@"%.0f", result];
                a3 = result;
                break;
            case 8:
                angle4.text = [NSString  stringWithFormat:@"%.0f", result];
                a4 = result;
                break;
            case 10:
                angle5.text = [NSString  stringWithFormat:@"%.0f", result];
                a5 = result;
                break;
            case 12:
                angle6.text = [NSString  stringWithFormat:@"%.0f", result];
                a6 = result;
                break;
            case 14:
                angle7.text = [NSString  stringWithFormat:@"%.0f", result];
                a7 = result;
                break;
            case 16:
                angle8.text = [NSString  stringWithFormat:@"%.0f", result];
                a8 = result;
                break;
            case 18:
                angle9.text = [NSString  stringWithFormat:@"%.0f", result];
                a9 = result;
                break;
            case 20:
                angle10.text = [NSString  stringWithFormat:@"%.0f", result];
                a10 = result;
                break;
            default:
                average = 0;
                break;

        }

        average = (a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10)/j; // calculates average
                                                                        // j is the running total


        if(isnan(average)) {
            averageAngle.text = [NSString  stringWithFormat:@""];
        }
        else {
            averageAngle.text = [NSString  stringWithFormat:@"%.1f\u00B0", average ];
        }



    }




}

-(IBAction)resetAll:(id)sender {

    [self resetMethod];
    [self displayLabel];

}

-(void) resetMethod {

    averageAngle.text = [NSString  stringWithFormat:@""];

    test = 0;
    average = 0;
    result =0;
    j =0;

    a1 = 0;
    a2 = 0;
    a3 = 0;
    a4 = 0;
    a5 = 0;
    a6 = 0;
    a7 = 0;
    a8 = 0;
    a9 = 0;
    a10= 0;

    accelerometerLabel.text = [NSString  stringWithFormat:@""];
    angle1.text = [NSString  stringWithFormat:@""];
    angle2.text = [NSString  stringWithFormat:@""];
    angle3.text = [NSString  stringWithFormat:@""];
    angle4.text = [NSString  stringWithFormat:@""];
    angle5.text = [NSString  stringWithFormat:@""];
    angle6.text = [NSString  stringWithFormat:@""];
    angle7.text = [NSString  stringWithFormat:@""];
    angle8.text = [NSString  stringWithFormat:@""];
    angle9.text = [NSString  stringWithFormat:@""];
    angle10.text = [NSString  stringWithFormat:@""];

}

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    self.title = @"Angle of Elevation";
    [super viewDidLoad];
    [self resetMethod];
    }


- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Release any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
    self.motionManager = nil;
    self.accelerometerLabel = nil;
    self.gyroscopeLabel = nil;
    self.angle1 =nil;
    self.angle2 =nil;
    self.angle3 =nil;
    self.angle4 =nil;
    self.angle5 =nil;
    self.angle6 =nil;
    self.angle7 =nil;
    self.angle8 =nil;
    self.angle9 =nil;
    self.angle10 =nil;
    self.averageAngle=nil;
    [super viewDidUnload];
}

- (void)dealloc {
    [motionManager release];
    [accelerometerLabel release];
    [gyroscopeLabel release];
    [startButton release];
    [angle1 release];
    [angle2 release];
    [angle3 release];
    [angle4 release];
    [angle5 release];
    [angle6 release];
    [angle7 release];
    [angle8 release];
    [angle9 release];
    [angle10 release];
    [averageAngle release];
    [buttonImage1 release];
    [buttonImage2 release];

    [super dealloc];
}

@end