Unknown Behaviour by xcode

Below is my .m Class

In my class, I'm calling the action method that is -(IBAction)submitpost; so when I call it, it executes the code and jumps to refresh method to parse the XML. To my shockness I don't know the parsing is done sometimes and sometimes not. To check that I have debug by putting breakpoints on the methods of parse below, and when there is a time xcode executes all functions it executes all methods but when xcode doesn't then it only jumps to the refresh method from the -(ibaction)submitpost; method. But after refresh method is called none other methods are called. I don't why? Can anybody please help me out, as this function works sometime and sometimes not.

I have put the breakpoints on each method.

#import "writeblog.h"
#import <QuartzCore/QuartzCore.h>
#import "RSSEntry.h"
#import "ASIHTTPRequest.h"
#import "GDataXMLNode.h"
#import "GDataXMLElement-Extras.h"
#import "NSDate+InternetDateTime.h"
#import "NSArray+Extras.h"
#import "WebViewController.h"
#import "UniqueDomainIDBlog.h"


@implementation writeblog
@synthesize posttext;
@synthesize allEntries = _allEntries;
@synthesize feeds = _feeds;
@synthesize queue = _queue,webView;


- (void)refresh {
    
    for (NSString *feed in _feeds) {
        NSURL *url = [NSURL URLWithString:feed];
        ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
        [request setDelegate:self];
        [_queue addOperation:request];
    }
    
}

- (void)parseRss:(GDataXMLElement *)rootElement entries:(NSMutableArray *)entries {          
           NSString *status = [rootElement valueForChild:@"status"];                    
       
        NSLog(@"the status is %@ ",status);
        
        NSUserDefaults *st=[NSUserDefaults standardUserDefaults];
        [st setObject:status forKey:@"statusdefault"];
    
    if ([status intValue]==1) {
      UIAlertView  *alertView = [[UIAlertView alloc] initWithTitle:@"Post Sent Successfully"
                                               message:@""
                                              delegate:nil
                                     cancelButtonTitle:@"Okay"
                                     otherButtonTitles:nil];
        [alertView show];
        [alertView release];

    }
    
    if ([status intValue]==0) {
        UIAlertView  *alertView = [[UIAlertView alloc] initWithTitle:@"Post send failed"
                                                             message:@"Please try again"
                                                            delegate:nil
                                                   cancelButtonTitle:@"Okay"
                                                   otherButtonTitles:nil];
        [alertView show];
        [alertView release];
        
    }
      
    
}      


- (void)parseFeed:(GDataXMLElement *)rootElement entries:(NSMutableArray *)entries {    
    if ([rootElement.name compare:@"rss"] == NSOrderedSame) {
        [self parseRss:rootElement entries:entries];
    } 
    else if ([rootElement.name compare:@"response"] == NSOrderedSame) {                       
        [self parseRss:rootElement entries:entries];
        
    }
    else {
        NSLog(@"Unsupported root element: %@", rootElement.name);
    }    
}


- (void)requestFinished:(ASIHTTPRequest *)request {
    
    [_queue addOperationWithBlock:^{
        
        NSError *error;
        GDataXMLDocument *doc = [[GDataXMLDocument alloc] initWithData:[request responseData] 
                                                               options:0 error:&error];
        if (doc == nil) { 
            NSLog(@"Failed to parse %@", request.url);
        } 
        else {
            
            NSMutableArray *entries = [NSMutableArray array];
            [self parseFeed:doc.rootElement entries:entries];                
          
            
        }        
    }];
    
}

-(IBAction)hidekeyboard{
    [posttext resignFirstResponder];
    
}

-(IBAction)submitpost{
    NSString *text=posttext.text;
    NSUserDefaults *st2=[NSUserDefaults standardUserDefaults];
    NSString *session=[st2 objectForKey:@"session_iddefault"];
    
    self.allEntries = [NSMutableArray array];
    self.queue = [[NSOperationQueue alloc] init] ;
    
    NSString *url1=[NSString stringWithFormat:@"http://sme.allomani.com/apps/api.php?action=blog_write&amp;domain_id=1&amp;content=%@&amp;session_id=%@&quot;,text,session];
    
    self.feeds = [NSArray arrayWithObjects:url1,
                  nil];
    
    NSLog(@"session %@ and url is %@",session,url1);
    
    [self refresh];
    

- (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.
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
    posttext.layer.borderWidth = 5.0f;
    posttext.layer.borderColor = [[UIColor grayColor] CGColor];
    posttext.layer.cornerRadius = 5;
    posttext.clipsToBounds = YES;
    controlflowin=1;
    
    
    // Do any additional setup after loading the view from its nib.
}



- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

@end

Any help will be greatly appreciated, thank you.