uialertview leaking with nsurlconnection or mbprogresshud or else ?

[harshal]

HI I have a private api class for a indicator view as taken from the following link :



MBProgressHUD for iPhone | Bukovinski



Now on that I am startin an synchronous request and after getting the data I am showing an alertview .



But Immidiatelly after that I am getting a 16 bytes leak .. On each call to the function It is repeated..



The function code is :

NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@/Service.asmx/insertFavourite?uid=2&restid=%@",[[NSUserDefaults standardUserDefaults] stringForKey:@"readOnly_key"],
                                                     [object.id stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]]];
     
          NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:10.0];
          [request setHTTPMethod:@"GET"];
          //[request setTimeoutInterval:10];
          //NSURLResponse *response = nil;
//          NSError *error = nil;
     [[NSURLCache sharedURLCache] setMemoryCapacity:0];
     [[NSURLCache sharedURLCache] setDiskCapacity:0];
          NSData *data1= [NSURLConnection sendSynchronousRequest:request          
                                                        returningResponse:nil error:nil];
          
          if(data1 == nil)
          {
               UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Alert"
                                                                         message:@"The network is not available.\n Please check the Internet connection."
                                                                        delegate:nil
                                                             cancelButtonTitle:@"OK"
                                                             otherButtonTitles:nil];
               [alert show];
               [alert release];
               
          }
          else
          {
               
               
               
               [favoritesButton setTitle:@"Remove" forState:UIControlStateNormal];
               UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Confirmation"
                                                                         message:@"Added To favorites" 
                                                                        delegate:nil
                                                             cancelButtonTitle:@"OKAY"
                                                             otherButtonTitles:nil];
               [alert show];

//***************************************instruments shows leak here *************************
               [alert release];
               
               
               
          }
          [request release];

In log I am gettin this :::
RestaurantApp(1802,0xb029a000) malloc: *** error for object 0x116c370: double free
*** set a breakpoint in malloc_error_break to debug

an the retain count of alert is getting 4 every time .. I haven't retained the alert object anywhere ????????????????
So what can be the possible reason . Is it something internal or my own ?