I am using a pretty basic product collection but it isn't returning all products in my store. Please find the code below:

$collection = Mage::getModel('catalog/product')->getCollection()->addAttributeToSelect('*');

This returns 4,972 products, but there is a total of 7,265 products in my store which is shown under Manage Products in the admin panel.

Has anyone experienced this before and possibly knows a way to fix this?

Thanks!

EDIT

I have also ran the following code to see the SQL being executed:

echo $collection->getSelect();

This has returned the following SQL:

SELECT 1 AS `status`, `e`.`entity_id`, `e`.`type_id`, `e`.`attribute_set_id`, `e`.`entity_id`, `e`.`attribute_set_id`, `e`.`type_id`, `e`.`cost`, `e`.`created_at`, `e`.`gift_message_available`, `e`.`has_options`, `e`.`image_label`, `e`.`is_recurring`, `e`.`links_exist`, `e`.`links_purchased_separately`, `e`.`links_title`, `e`.`msrp`, `e`.`msrp_display_actual_price_type`, `e`.`msrp_enabled`, `e`.`name`, `e`.`news_from_date`, `e`.`news_to_date`, `e`.`price`, `e`.`price_type`, `e`.`price_view`, `e`.`recurring_profile`, `e`.`required_options`, `e`.`shipment_type`, `e`.`short_description`, `e`.`sku`, `e`.`sku_type`, `e`.`small_image`, `e`.`small_image_label`, `e`.`special_from_date`, `e`.`special_price`, `e`.`special_to_date`, `e`.`tax_class_id`, `e`.`thumbnail`, `e`.`thumbnail_label`, `e`.`updated_at`, `e`.`url_key`, `e`.`url_path`, `e`.`visibility`, `e`.`weight`, `e`.`weight_type`, `e`.`manufacturer`, `e`.`prmotional_text`, `e`.`brand`, `e`.`brand_value` FROM `shop_catalog_product_flat_1` AS `e`

EDIT #2

I have just amended all my products to be included in my main store view (ID 1), but still no luck.

I've also noticed the total number of products changes slightly, it has gone from 4,972 to 4,971 to 4,973.