gistfile1.m

#import <UIKit/UIKit.h>
#import "LDMAdit.h"

@interface SimpleAdView : UIView {
	NSString *wantedPageId;
	LDMAdit *ldmAdit;
}

- (void) switchToEstatGroup: (NSString *) estatGroup andPage: (NSString *) estatPage;

@end


@implementation SimpleAdView

- (void) load: (NSString *) pageId {
	[ldmAdit removeFromSuperview];
	ldmAdit = [[LDMAdit alloc] initWithBannerType: extendedBanner campaignId: pageId autoRefresh: FALSE];	
	[ldmAdit initConfig: LDMADIT_SERVER_PRODUCTION showLog: YES alertBeforeShowingAd: NO];
	wantedPageId = pageId;
	
#if BYPASS_LDMADIT
	[self setBackgroundColor: [UIColor redColor]];
#else
	[self addSubview: ldmAdit];
	[ldmAdit release];	
	[ldmAdit showAd];
#endif
}

- (void) switchToEstatGroup: (NSString *) estatGroup andPage: (NSString *) estatPage {
#if DEBUG
	NSString *pageId = @"4510";
	NSDictionary *dict = [[NSDictionary alloc] initWithObjectsAndKeys:
						  @"4510", @"Home",
						  nil];	
#else
	NSString *pageId = @"2439";
	NSDictionary *dict = [[NSDictionary alloc] initWithObjectsAndKeys:
						  @"2439", @"Home",
						  @"2756", @"deconnexion",
						  @"2757", @"Mon_actu",
						  @"2758", @"Upload",
						  @"2759", @"Chat",
						  @"2760", @"admin_blog",
						  @"2761", @"profils_admin",
						  @"2762", @"friends",
						  @"2763", @"Messagerie",
						  @"2764", @"Blog",
						  @"2765", @"profils",
						  @"2766", @"Account",
						  @"2767", @"gifts",
						  @"2768", @"search",
						  @"2769", @"error",
						  nil];	
#endif
	
	for (NSString *foundGroup in dict) {
		if ([foundGroup compare: estatGroup options: NSCaseInsensitiveSearch | NSDiacriticInsensitiveSearch] == 0) {
			pageId = [dict objectForKey: foundGroup];
			break;
		}
	}
	[dict release];
	[self load: pageId];
}

- (id)initWithFrame:(CGRect)frame {
    if (!(self = [super initWithFrame: frame])) {
		return nil;
    }
	self.opaque = YES;
	self.backgroundColor = [UIColor clearColor];
	wantedPageId = nil;
	ldmAdit = nil;
	
    return self;
}


- (void)drawRect:(CGRect)rect {
	
}


- (void)dealloc {
    [super dealloc];
}

@end

Try this changes :

change load function line 16 by

• (void) load: (NSString *) pageId {

ldmAdit = [[LDMAdit alloc] initWithBannerType: extendedBanner campaignId: pageId autoRefresh: FALSE];
[self addSubview: ldmAdit];
//you need to add sudview before initialisize adit
[ldmAdit initConfig: LDMADIT_SERVER_PRODUCTION showLog: YES alertBeforeShowingAd: NO];
wantedPageId = pageId;
[ldmAdit showAd];
}

change line 65 by
[ldmAdit showAd]; //to show an ad, you just call showad

add line 87
[ldmAdit dealloc];