After a recent update to the Android market application I noticed that most of my applications were missing. This was a real pain when it came to trying to update the applications. Going into the main application settings page and clearing the cache for the market application brought them back, but subsequent loads, or on finding updates, seemed to reset the list back to only showing about 4 applications. After much frustration, on closer investigation I found that the account being used in the market application wasn't my main account. I changed accounts and now everything seems to be back to normal!