Tengo un UITableView cuyas celdas solo contendrán imágenes de alturas variables, establezco la altura de la fila dinámicamente según la imagen, no funciona a la perfección, las imágenes durante el desplazamiento a veces se superponen. Aquí está el código ...

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return [artistfeeds count];
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return 1;
}

-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell=[self.newsTableView dequeueReusableCellWithIdentifier:@"artistFeedCell"];

    UIImageView *imgView=[[UIImageView alloc]initWithImage:((ESArtistFeedObject*)[artistfeeds objectAtIndex:indexPath.section]).image];
    [cell.contentView addSubview:imgView];
    [cell.contentView sizeToFit];
    return  cell;
}

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    CGFloat height=((ESArtistFeedObject*)[artistfeeds objectAtIndex:indexPath.section]).image.size.height;
    NSLog(@"section: %i, image height: %f",indexPath.section,height);
    return height;
}

-(void)artistFeedFound:(NSNotification*)notification
{
    //NSLog(@"%@",[notification userInfo]);
    artistfeeds=[[NSMutableArray alloc]init];
    if([[[[notification userInfo]objectForKey:@"artistfeed"]objectForKey:@"artist"] isKindOfClass:[NSArray class]])
    {
        for(NSDictionary *tempDict in [[[notification userInfo]objectForKey:@"artistfeed"]objectForKey:@"artist"])
        {
            ESArtistFeedObject *artistFeed=[[ESArtistFeedObject alloc]init];
            artistFeed.name=[tempDict objectForKey:@"name"];
            artistFeed.type=[tempDict objectForKey:@"postType"];
            artistFeed.desc=[tempDict objectForKey:@"postDesc"];
            if(![artistFeed.type isEqualToString:@"photo"])
                artistFeed.image=[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://c0364947.cdn2.cloudfiles.rackspacecloud.com/%@",[tempDict objectForKey:@"artist_image"]]]]];
            else
                artistFeed.image=[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[tempDict objectForKey:@"photo"]]]];
            [artistfeeds addObject:artistFeed];
        }
    }
    [self.newsTableView reloadData];

}

¿Alguna sugerencia?